Physical and Chemical Changes

1
Physical and Chemical Changes

• A Write On Activity

2
Objective Chemical/Physical Change
Differentiate

• The learner will be able to (ESSENTIAL)
  distinguish between a physical and chemical
  change.

3
Matter

• Matter is everywhere.
• Matter is anything that takes up space and has
  mass.
• Matter is constantly experiencing both chemical
  and physical changes.

4
Physical Change

• Physical changes occur when matter changes its
  property but not its chemical nature.
• Physical property changes could include a change
  in texture, shape, size, color, odor, volume,
  mass, weight, and density.

5
Physical Change
6
Chemical Change

• Chemical changes are changes matter undergoes
  when it becomes new or different matter.
• To identify a chemical change look for signs such
  as color change, bubbling and fizzing, light
  production, smoke, and presence of heat.

7
Chemical Change

• A chemical change occurs when fireworks are used.
  Fireworks are made of metals such as magnesium
  and copper. These change chemically as they
  light up the sky.

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Is it a chemical or physical change?

• Sugar dissolving in tea

• Chemical Change

• Physical Change

9
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

10
Correct!
11
Is it a chemical or physical change?

• Logs burning

• Chemical Change

• Physical Change

12
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

13
Correct!
14
Is it a chemical or physical change?

• Breaking water up by separating it into hydrogen
  and oxygen

• Chemical Change

• Physical Change

15
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

16
Correct!
17
Is it a chemical or physical change?

• Cutting paper

• Chemical Change

• Physical Change

18
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

19
Correct!
20
Is it a chemical or physical change?

• Crushing an aspirin

• Chemical Change

• Physical Change

21
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

22
Correct!
23
Is it a chemical or physical change?

• Metal rusting

• Chemical Change

• Physical Change

24
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

25
Correct!
26
Is it a chemical or physical change?

• Lighter fluid burining

• Chemical Change

• Physical Change

27
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

28
Correct!
29
Is it a chemical or physical change?

• An egg rotting

• Chemical Change

• Physical Change

30
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

31
Correct!
32
Is it a chemical or physical change?

• An egg breaking

• Chemical Change

• Physical Change

33
OOPS!

• Did it change size, color, shape (Physical
  Change)?
• or
• Did it become different matter (Chemical Change)?

34
Correct!
35
Writing Activity

• Write a paragraph about the difference between a
  chemical and physical change. Give examples of
  each.