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
Ch. 11Lesson 2
How do atoms combine?
atom•smallest particle of an element that still has the properties of that element
center of atom
no electrical charge
positive charge
negative charge
periodic table
organizes elements
arranged inrows by
# of protons
elements incolumns have
similar chemicalproperties
molecule• smallest particle of a substance that has properties of that substance
• share electrons
compound•made of combination of elements
•prop. of compounds - different from prop. of elements that make them up
+
+ =C6H12O6
carbon= C hydrogen= H
oxygen= O
• ex. C6H12O6 = glucose (sugar)
– 6 carbon atoms
– 12 hydrogen atoms
– 6 oxygen atoms
salts• compounds - particles held together by opposite charges
• made of 1 metal element & 1 nonmetal element
• form crystalsNaCl
sodium + chlorine
NaCl, Table Salt Crystals 79XNaCl, Table Salt Crystals 79X
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
6. Make your own molecule, use at least 4 different types of elements.
Name your compound.
# of marbles Color of marbles
6 black
2 Light blue
15 Yellow
4 Red
4 Green
2 purple
2 orange