Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more...
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Transcript of Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more...
![Page 1: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/1.jpg)
Lesson: Mixtures & Compounds
![Page 2: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/2.jpg)
Science Differentiation in action
A mixture is made of two or more substances mingled together but not chemically combined.
Air is a mixture
Sea water is a mixture
![Page 3: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/3.jpg)
Science Differentiation in action
Air contains:
nitrogen
oxygen
carbon dioxide
![Page 4: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/4.jpg)
Science Differentiation in action
Sea-water contains:
water
salt
The Dead Sea has a high concentration of salt.
![Page 5: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/5.jpg)
Science Differentiation in action
A compound is formed when two or more elements combine chemically.
Carbon dioxide gas is a compound formed when one atom of carbon is combined chemically with two atoms of oxygen (CO2).
oxygen
carbon
![Page 6: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/6.jpg)
Science Differentiation in action
A compound is formed when two or more elements combine chemically
Water is a compound formed when one atom of oxygen is combined chemically with two atoms of hydrogen (H2O).
hydrogen
oxygen
![Page 7: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/7.jpg)
Science Differentiation in action
Examples of compounds
Water (H2O)
Carbon dioxide (CO2)
Magnesium oxide (MgO)
Iron sulfide (FeS)
How many atoms are in each molecule of the above compounds?
![Page 8: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/8.jpg)
Science Differentiation in action
Differences between mixtures and compounds
MIXTURES
• Made of 2 or more substances
COMPOUNDS
• Is a single substance
• Proportion of each substance may vary
• Proportion of each element is fixed
• Properties are the same as the properties of the substances mixed together
• Properties are different to the elements involved
• Generally easy to separate • Difficult to separate
![Page 9: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/9.jpg)
Science Differentiation in action
A compound is a completely new substance with its own properties.
Water (H2O) is a liquid that can put out fires.
Yet, the elements that make it are very different.
Hydrogen (H2) is an explosive gas.
Oxygen (O2) is needed for burning.
hydrogen
oxygen
![Page 10: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/10.jpg)
Science Differentiation in action
Carbon dioxide (CO2) is a colourless gas used to put out fires.
Carbon (C) is a black solid.
Oxygen (O2) is needed for burning.
oxygen
carbon
A compound is a completely new substance with its own properties.
![Page 11: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/11.jpg)
Science Differentiation in action
Magnesium oxide (MgO) is a dull white solid.
Magnesium (Mg) is a soft shiny metal.
Oxygen (O2) is needed for burning.
A compound is a completely new substance with its own properties.
![Page 12: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/12.jpg)
Science Differentiation in action
Iron sulfide (FeS) is a grey solidthat is not attracted to magnets.
Iron (Fe) is a metalthat is attracted to magnets.
Sulfur (S) is a bright yellow solid.
A compound is a completely new substance with its own properties.
![Page 13: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/13.jpg)
Science Differentiation in action
1. Is air a mixture or a compound?
Review Questions
2. What elements is carbon dioxide made from?
3. Name one difference between a compound and a mixture.
4. Hydrogen is explosive and oxygen is needed for burning. What compound can both of these elements make?
![Page 14: Lesson: Mixtures & Compounds. Science Differentiation in action A mixture is made of two or more substances mingled together but not chemically combined.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649d085503460f949d9821/html5/thumbnails/14.jpg)
Science Differentiation in action
How could you check if a substance was an element or a compound?
Question to think about!
hydrogen
oxygen