Science

1. PHYSICAL CHANGE
VS
CHEMICAL CHANGE

2. OBJECTIV
ES:
 Understand the difference between
physical changes and chemical
change.
 Tell evidence of physical changes
and chemical change.
 Categorize changes as physical or
chemical, and show examples of
each.

3. WHAT IS PHYSICAL CHANGE?

4. PHYSICAL CHANGE
No new substance is
created.
Involves a change
in phase, size and
shape.
 No alteration in its
composition.

5. EXAMPLE
CRUSHING A CAN
BOILING WATER
CHOPPING WOOD
BREAKING OF GLASS

6. WHAT IS CHEMICAL CHANGE?

7. CHEMICAL CHANGE
New substance is
created.
Evidence include
formation of
precipitate,
production of heat
and light and change
in color

8. EXAMPLE
BURNING OF WOOD
RUSTING OF IRON
DIGESTION

9. CHEMICAL CHANGE

10. PHYSICAL CHANGE

11. PHYSICAL CHANGE

12. CHEMICAL CHANGE

13. MELTING OF CANDLE
PHYSICAL CHANGE

14. CUTTING OF PAPER
PHYSICAL CHANGE

17. AS A
NOTREDAMEI
ANS HOW
DOES
CHANGE
AFFECT YOUR
LIFE?

19. TEST I. Essay (express your idea)
1. What is the difference between
physical and chemical change?
(5pts. Expand your idea)

20. TEST II. Classify the following examples as physical
or chemical changes.
a) A puddle of water evaporates.
b) Lighting the gas in a bunsen burner.
c) Lighting a match.
d) Steam condensing on a mirror.
e) Melting a gold nugget to make a gold bar.
f) Dynamite exploding.
g) Water freezes to make ice cubes.
h) Ice cream melting.