C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards...
Transcript of C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards...
![Page 1: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/1.jpg)
C1 Quick Revision Questions
C1 for AQA GCSE examination 2018 onwards
![Page 2: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/2.jpg)
Question 1
• What is an element?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 3: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/3.jpg)
• An element is a substance that cannot be broken down chemically.
Answer 1 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 4: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/4.jpg)
Question 2
• What is a compound?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 5: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/5.jpg)
• A compound is a substance that contains at least two different elements, chemically combined in fixed proportions.
Answer 2 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 6: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/6.jpg)
Question 3
• What is the name of the compound made from sodium and oxygen?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 7: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/7.jpg)
Sodium oxide
Answer 3 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 8: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/8.jpg)
Question 4
• How many atoms are in the molecule C4H10?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 9: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/9.jpg)
There are 14 atoms in the molecule C4H10
Answer 4 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 10: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/10.jpg)
Question 5
• Balance the following equation:
Mg + O2 MgO
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 11: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/11.jpg)
2Mg + O2 2MgO
Answer 5 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 12: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/12.jpg)
Question 6
• Why can mixtures be easily separated?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 13: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/13.jpg)
• Mixtures can be easily separated because the chemicals are not joined together.
Answer 6 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 14: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/14.jpg)
Question 7
• Give 4 examples of separating mixtures
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 15: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/15.jpg)
• Separation processes include:
• Filtration, distillation, crystallisation, chromatography
Answer 7 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 16: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/16.jpg)
Question 8
• How does filtration separate a mixture?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 17: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/17.jpg)
• Filtration separates insoluble substances from soluble substances.
Answer 8 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 18: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/18.jpg)
Question 9
• How does distillation separate liquids?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 19: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/19.jpg)
• Distillation separates liquids that have different boiling points.
Answer 9 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 20: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/20.jpg)
Question 10
• What technique is used to separate the different substances in crude oil?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 21: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/21.jpg)
• Fractional distillation is used to separate the different substances in crude oil.
Answer 10 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 22: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/22.jpg)
Question 11
• Why has the atomic model changed over time?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 23: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/23.jpg)
• The atomic model has changed over time because new evidence is discovered which helps to improve the model.
Answer 11 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 24: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/24.jpg)
Question 12
• What is the relative charge on a proton?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 25: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/25.jpg)
The relative charge on a proton is +1
Answer 12 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 26: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/26.jpg)
Question 13
• What is the relative charge on an electron?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 27: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/27.jpg)
The relative charge on an electron is -1
Answer 13 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 28: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/28.jpg)
Question 14
• What is the relative charge on a neutron?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 29: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/29.jpg)
The relative charge on a neutron is 0
Answer 14 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 30: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/30.jpg)
Question 15
• Where are protons and neutrons found in an atom?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 31: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/31.jpg)
• Protons and neutrons are found in the nucleus of an atom.
Answer 15 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 32: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/32.jpg)
Question 16
• Where are electrons found in an atom?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 33: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/33.jpg)
• Electrons are found in electron shells, surrounding the nucleus.
Answer 16 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 34: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/34.jpg)
Question 17
• An atom is neutral – true or false?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 35: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/35.jpg)
• True
Answer 17 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 36: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/36.jpg)
Question 18
• What is the relative mass of an electron?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 37: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/37.jpg)
• The relative mass of an electron is 0.0005
Answer 18 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 38: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/38.jpg)
Question 19
• What is the relative mass of a proton?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 39: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/39.jpg)
• The relative mass of a proton is 1
Answer 19 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 40: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/40.jpg)
Question 20
• What is the relative mass of a neutron?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 41: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/41.jpg)
The relative mass of a neutron is 1.
Answer 20 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 42: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/42.jpg)
Question 21
• What is an ion?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 43: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/43.jpg)
An ion is a charged particle.
Answer 21 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 44: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/44.jpg)
Question 22
• What is the mass number of an atom?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 45: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/45.jpg)
• The mass number of an atom is the total number of protons and neutrons.
Answer 22 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 46: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/46.jpg)
Question 23
• What is the atomic number of an atom?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 47: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/47.jpg)
The atomic number is the number of proton in an atom.
Answer 23 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 48: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/48.jpg)
Question 24
• What is the atomic number of Carbon?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 49: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/49.jpg)
The atomic number of Carbon is 6
Answer 24 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 50: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/50.jpg)
Question 25
• What is the mass number of Sodium?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 51: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/51.jpg)
The mass number of Sodium is 23
Answer 25 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 52: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/52.jpg)
Question 26
• What is an isotope?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 53: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/53.jpg)
• Isotopes are atoms with the same number of protons but with a different number of neutrons.
Answer 26 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 54: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/54.jpg)
Question 27
• What is the symbol for relative atomic mass?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 55: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/55.jpg)
• The symbol for relative atomic mass is Ar
Answer 27 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 56: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/56.jpg)
Question 28
• How do you calculate relative atomic mass Ar?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 57: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/57.jpg)
• Ar =
Answer 28 .... of 50
C1 for AQA GCSE examination 2018 onwards
(mass of 1st isotope x % of 1st isotope)
+ (mass of 2nd
isotope x % of 2nd isotope)
100
![Page 58: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/58.jpg)
Question 29
• What is the definition of relative atomic mass?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 59: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/59.jpg)
• Relative atomic mass of an element is the average mass of different isotopes of an element.
Answer 29 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 60: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/60.jpg)
Question 30
• What is the maximum number of electrons in the first shell of an atom?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 61: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/61.jpg)
• There is a maximum of 2 electrons in the first shell of an atom.
Answer 30 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 62: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/62.jpg)
Question 31
• What is the maximum number of electrons in the 2nd shell of an atom?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 63: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/63.jpg)
• The maximum number of electrons in the 2nd
shell of an atom is 8.
Answer 31 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 64: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/64.jpg)
Question 32
• Oxygen has an atomic number of 8.
• What is Oxygen’s electronic pattern?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 65: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/65.jpg)
• Oxygen’s electron pattern is 2,6
Answer 32 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 66: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/66.jpg)
Question 33
• What are columns in the periodic table known as?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 67: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/67.jpg)
• Columns in the periodic table are called groups.
Answer 33 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 68: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/68.jpg)
Question 34
• What are rows in the periodic table known as?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 69: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/69.jpg)
• Rows in the periodic table are known as periods.
Answer 34 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 70: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/70.jpg)
Question 35
• How many electrons do group 1 elements have in their outer shell?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 71: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/71.jpg)
• Group 1 elements have 1 electron in their outer shell.
Answer 35 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 72: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/72.jpg)
Question 36
• Which Scientist noticed that sometimes three elements had similar properties?
He noticed patterns with:
• Lithium, Sodium and Potassium
• Calcium, Strontium and Barium
• Chlorine, Bromine and Iodine
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 73: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/73.jpg)
• Dobreiner noticed sometimes three elements had similar properties. These are known as ‘Dobreiner triads’
Answer 36 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 74: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/74.jpg)
Question 37
• Which Scientist called their theory the ‘law of octaves’
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 75: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/75.jpg)
• John Newlands said that when he put the elements in atomic weight order there was often a pattern of similar properties every eight elements. He called his theory the ‘law of octaves’.
Answer 37 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 76: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/76.jpg)
Question 38
• Which Scientist left gaps in his version of the periodic table and made predictions about
elements that had not yet been discovered? He grouped elements in groups of similar
chemical behaviour.
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 77: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/77.jpg)
• Dmitri Mendeleev left gaps in his version of the periodic table and made predictions about elements that had not yet been discovered.
Answer 38 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 78: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/78.jpg)
Question 39
• Give 5 physical properties of metals
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 79: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/79.jpg)
• Metals are:
• Lustrous
• Hard
• Have a high density
• Have a high tensile strength
• Have high melting and boiling points
• Are good conductors of heat
• Have good electrical conductivity
Answer 39 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 80: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/80.jpg)
Question 40
• Give 5 physical properties of non-metals
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 81: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/81.jpg)
• Non-metals are:
• Dull• Soft, brittle or gases• Low density• Low or no tensile strength or gas• Low melting point and boiling point• Poor or no thermal conductivity• Poor or non conductors of electricity
Answer 40 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 82: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/82.jpg)
Question 41
• Where are metals found on the periodic table?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 83: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/83.jpg)
• Metals are found on the left hand side and centre of the periodic table.
Answer 41 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 84: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/84.jpg)
Question 42
• Where are non-metals found on the periodic table?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 85: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/85.jpg)
• Non-metals are found on the right hand side of the periodic table.
Answer 42 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 86: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/86.jpg)
Question 43
• What properties do group 0 have in common?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 87: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/87.jpg)
• Group 0 are all gases
• They are all unreactive
Answer 43 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 88: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/88.jpg)
Question 44
• Why do group 0 elements exist as single atoms?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 89: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/89.jpg)
• Group 0 atoms all have 8 electrons in their outer shell so they exist as single atoms.
Answer 44 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 90: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/90.jpg)
Question 45
• Give the word equation for the reaction between sodium and water
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 91: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/91.jpg)
• Sodium + water sodium hydroxide + hydrogen
Answer 45 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 92: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/92.jpg)
Question 46
• What is the trend in reactivity of group 1 as you go down the group?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 93: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/93.jpg)
• Group 1 elements get more reactive as you go down the group.
Answer 46 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 94: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/94.jpg)
Question 47
• What is the trend in reactivity of Group 7 as you go down the group?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 95: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/95.jpg)
• The group 7 elements decrease in reactivity as you go down the group.
Answer 47 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 96: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/96.jpg)
Question 48
• Where are the transition elements found on the periodic table?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 97: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/97.jpg)
• The transition elements are found in the middle of the periodic table.
Answer 48 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 98: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/98.jpg)
Question 49
• Transition elements are often catalysts. What is a catalyst?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 99: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/99.jpg)
• Catalysts change the rate of a chemical reaction without taking part in the reaction as a reactant. Catalysts are unchanged by the reaction.
Answer 49 .... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 100: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/100.jpg)
Question 50
• What does Fe(II) mean?
.... of 50
C1 for AQA GCSE examination 2018 onwards
![Page 101: C1 Quick Revision Questions Quick Revision Questions C1 for AQA GCSE examination 2018 onwards Question 1 •What is an element? .... of 50 C1 for AQA GCSE examination 2018 onwards](https://reader031.fdocuments.in/reader031/viewer/2022022003/5aa38daa7f8b9a1f6d8eb142/html5/thumbnails/101.jpg)
• Fe(II) means that iron has lost two electrons to make a 2+ ion
Answer 50 .... of 50
C1 for AQA GCSE examination 2018 onwards