5th Grade-Ch. 11 Lesson 2 How do atoms combine
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Transcript of 5th Grade-Ch. 11 Lesson 2 How do atoms combine
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Ch. 11Lesson 2
How do atoms combine?
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atom•smallest particle of an element that still has the properties of that element
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center of atom
no electrical charge
positive charge
negative charge
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periodic table
organizes elements
arranged inrows by
# of protons
elements incolumns have
similar chemicalproperties
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molecule• smallest particle of a substance that has properties of that substance
• share electrons
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compound•made of combination of elements
•prop. of compounds - different from prop. of elements that make them up
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+
+ =C6H12O6
carbon= C hydrogen= H
oxygen= O
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• ex. C6H12O6 = glucose (sugar)
– 6 carbon atoms
– 12 hydrogen atoms
– 6 oxygen atoms
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salts• compounds - particles held together by opposite charges
• made of 1 metal element & 1 nonmetal element
• form crystalsNaCl
sodium + chlorine
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NaCl, Table Salt Crystals 79XNaCl, Table Salt Crystals 79X
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ACTIVITY-MAKING MOLECULES
1.1. HH22O
2.CO2
3.C2HH44
4.CClCl44
5.C6HH1212O6
Blue- Nitrogen- NBlue- Nitrogen- N
Yellow- Hydrogen- Yellow- Hydrogen- HH
Black- Carbon- CBlack- Carbon- C
Green- Chlorine- ClGreen- Chlorine- Cl
Purple- Iodine- IPurple- Iodine- I
Fluorine- FFluorine- F
Red- Oxygen- ORed- Oxygen- O
Orange- Bromine- BrOrange- Bromine- Br
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6. Make your own molecule, use at least 4 different types of elements.
Name your compound.
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# of marbles Color of marbles
6 black
2 Light blue
15 Yellow
4 Red
4 Green
2 purple
2 orange