Name: __________________
Date: _________________________
Block: ____________
Physical and Chemical Properties and Changes


Physical Property
Observed with senses
Determined without
destroying matter


Chemical Property
Indicates how a substance reacts with
something else
Matter will be changed into a new
substance after the reaction
Identify the following as a chemical property (C) or a physical property (P):
_______ 1. Blue colour
_______ 8. Melting point
_______ 2. Density
_______ 9. Reacts with water
_______ 3. Flammability (burns)
_______ 10. Hardness
_______ 4. Solubility (dissolves)
_______ 11. Boiling point
_______ 5. Reacts with acid
_______ 12. Luster (shine)
_______ 6. Supports combustion
_______ 13. Odour
_______ 7. Sour taste
_______ 14. Reacts with air


Physical Change
Change in size, shape, or state
No new substance is formed


Chemical Change
A change in the physical and
chemical properties
A new substance is formed
Identify the following as a physical (P) or chemical (C) change:
_______ 1. Table salt dissolves in
water.
_______ 2. Silver tarnishes.
_______ 3. An apple is cut.
_______ 4. Heat changes water to
steam.
_______ 5. Baking soda reacts to
vinegar.
_______ 6. Iron rusts.
_______ 7. Water evaporates.
_______ 8. Ice melts
_______ 9. Milk sours.
_______ 10. Sugar dissolves in
water.
_______ 11. Wood rots.
_______ 12. Pancakes cook.
_______ 13. Grass grows.
_______ 14. A tire is inflated.
_______ 15. Food is digested.
_______ 16. Paper towel absorbs
water.
Name: __________________
Block: ____________
Date: _________________________
Read each scenario. Decide whether a physical or chemical change has occurred and give
evidence for your decision.
Scenario
1.
A student removes a loaf of
bread hot from the oven. The
student cuts a slice off the
loaf and spreads butter on it.
2.
Your friend decides to toast a
piece of bread, but leaves it
in the toaster too long. The
bread is black and the kitchen
is full of smoke.
3.
You forgot to dry the bread
knife when you washed it and
reddish brown spots appear
on it.
4.
You blow dry your wet hair.
5.
6.
In baking biscuits and other
quick breads, the baking
powder reacts to release
carbon dioxide bubbles. The
carbon dioxide bubbles cause
the dough to rise.
You take out your best silver
spoons and notice that they
are very dull and have some
black spots.
Physical/Chemical
Change
Evidence …
Name: __________________
Date: _________________________
Block: ____________
A straight piece of wire is
coiled to form a spring.
7.
Food colouring is dropped into
water to give it colour.
8.
9.
10.
Chewing food to break it down
into smaller particles
represents a
______________ change.
The changing start into
sugars by enzymes in the
digestive system represents a
______________ change.
In a fireworks show, the
fireworks explode giving off
heat and light.