1. Which picture below represents atoms/molecules in a
solid? C
2. Which picture below represents atoms/molecules in a
liq...
Review
States of matter
Solid
Liquid
Gas
Plasma
Physical Change
Change in matter that
does not produce new
products
May look different, but
it’s not a new
substance
Physical Change
Chemical properties are
not changed
No energy given or
taken unless there is a
change of state
Change of State
Molecules gain or lose kinetic
energy
Melting/freezing,
evaporating/condensation
Change of State
Sublimation
Going from a solid to a
gas
Skips the liquid state
Chemical Change
Matter changes from one
kind of material to another
The atoms do not change
They rearrange themselves
Not ...
Chemical Change
The new substances
have new properties
Chemical change takes
place during a chemical
reaction
Energy
Always a part of a
chemical change
Given or taken
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Physical and Chemical Changes

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Physical and Chemical Changes

  1. 1. 1. Which picture below represents atoms/molecules in a solid? C 2. Which picture below represents atoms/molecules in a liquid? B 3. Which picture below represents atoms/molecules in a gas? A B. C. A.
  2. 2. Review States of matter Solid Liquid Gas Plasma
  3. 3. Physical Change Change in matter that does not produce new products May look different, but it’s not a new substance
  4. 4. Physical Change Chemical properties are not changed No energy given or taken unless there is a change of state
  5. 5. Change of State Molecules gain or lose kinetic energy Melting/freezing, evaporating/condensation
  6. 6. Change of State Sublimation Going from a solid to a gas Skips the liquid state
  7. 7. Chemical Change Matter changes from one kind of material to another The atoms do not change They rearrange themselves Not “easily” reversed
  8. 8. Chemical Change The new substances have new properties Chemical change takes place during a chemical reaction
  9. 9. Energy Always a part of a chemical change Given or taken

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