THIS IS A PHYSICAL AND CHEMICAL CHANGE PPT. FOR GRADE 5, GRADE 6, AND GRADE 7 BY ROBIN

1. PHYSICAL AND CHEMICAL
CHANGES
BY Robin

2. PHYSICAL CHANGES

3. PHYSICAL CHANGE
A Physical change is
a change in a
substance that does
not change what
the substance is.

4. PHYSICAL CHANGE
EXAMPLES
• Examples of physical :
• Melting (solid to liquid)
• Boiling (liquid to gas)
• Evaporation (liquid to gas)
• Condensation (gas to
liquid)
• Freezing (liquid to solid)
• Sublimation (solid to gas)
• Deposition (gas to solid)

5. PHYSICAL CHANGE
• Physical changes might
be caused by:
Breaking glass
Boiling water
Shredding paper
Folding paper
melting ice
Chopping wood
Cutting hair
Breaking egg

6. PHYSICAL CHANGE
•What could you do to
these items to cause a
physical change to
occur?

7. CHEMICAL CHANGES

8. CHEMICAL CHANGES
Chemical changes occur when a substance combines with
another to form a new substance, called chemical
synthesis or, alternatively, chemical decomposition into two
or more different substances. ... An example of a chemical
change is the reaction between sodium and water to
produce sodium hydroxide and hydrogen.

9. CHEMICAL CHANGES
• Examples of chemical
change:
• Burning
• Rusting
• Tarnishing
• Decomposing
• Polymerization

10. CHMEICAL CHANGES