Physical and Chemical Changes of Matter. Matter undergoes changes........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ MATTER.

1. Bar code scanners read the
white space between the
black lines rather than the
black lines themselves.

2. Ms. L

3. Physical Change & Chemical Change
1. explain what happens to matter during
physical and chemical change
2. describe the changes that matter
undergoes.

4. Ms. L
Why can’t things stay the same?

5. Why do people renovate their homes?

6. Using your gadget by group, in a
powerpoint presentation, create a
table and identify as to CHEMICAL
CHANGE, PHYSICAL CHANGE by
simply marking a “check” . Explain
your first 3 answers in front.
Follow the table.
Physical Chemical
Ice Melting
Rusting Metal
Dissolving Sugar
Campfire

7. Physical Change
• A change in which the form or appearance
of matter changes but not its composition
– Change of state
– Change of shape
– Dissolving

8. Physical Changes
changing state
melting – solid to liquid condensation – gas to liquid
freezing – liquid to solid sublimation – solid to gas
vaporization – liquid to gas deposition – gas to solid

9. Changes in States

10. Physical Changes
change of shape
Matter can change shape
cutting
tearing
grinding
crumpling
bending

11. Physical Changes
dissolving
When you mix or dissolve one thing into another, it is a
physical change

12. Chemical Change
• A change in which the composition of
matter changes and new substances are
formed
– It cannot be turned back into the original substance

13. Chemical Change
• Signs that a chemical change may have
taken place
– Color change
– Absorption or release of energy
– Odor
– Formation of gases or solids
– Can’t be reversed

14. Chemical Changes
Iron + oxygen and water = rust
silver + oxygen and water = tarnish

15. Chemical Changes
Burned wood
Cooked food

16. Chemical Changes
Leaves turning in fall
Spoiled food

17. Chemical Changes
Lightning bug
Antacid tablet

18. Physical or Chemical
Copper
jewelry
Statue of
Liberty
orange Orange juice Orange cake
copper
Physical Chemical
Physical Chemical

19. Law of Conservation of Mass
The total mass of matter before and after
a physical or chemical change is the
same.
Matter cannot be created or
destroyed
The particles inside the matter rearrange
to form new substances

20. Law of Conservation of Mass
Even though it appears that part of the
candle disappears, it is just turned into
a gas.
– proven by
Antoine Lavoisier

21. Directions: Take out all of the laminated cards. Find the “Physical Change” and
“Chemical Change” cards. Using the posterboard, put the “physical change” card
on the left side and the “chemical change” card on the right side.
Now take out the remaining cards and lay them out in front of you. As a table,
look at the picture and read the description on the back. Decide whether your
group thinks each one is a physical change or a chemical change. Once
everyone has agreed, place the card on the correct side of the poster.
Record your answers in the table on youR worksheet by placing an “X” in the
physical or chemical change box:
Physical Change Chemical Change