Physical / Chemical Changes TEST
1. *OAA What kind of change occurs when
baking soda has vinegar added to it? How do
we know?
ADD 3
PROCEDURE MASS VOLUME DROPS OF
VINEGAR
Fizzes and
some
BAKING
19g
15mL
dissolves
SODA
in the
liquid
A. Chemical, because we can reverse it.
B. Physical, because it fizzes.
C. Physical, because it melts.
D. Chemical, because it fizzes.
2. Which of the following is a physical change?
A. an egg frying
B. chopping onions
C. your stomach digesting food
D. a match burning
3. Which of the following is a chemical change?
A. bread baking in an oven
B. a pond freezing during the winter
C. dissolving sugar in a glass of water
D. forming a ball of clay into a bowl
4. In a _______________ new substances are
formed with different properties from the
original substances.
A. atomic change
B. molecular change
C. physical change
PRACTICE
D. chemical change
5. In a ________________ the properties of a
substance remain unchanged.
A. atomic change
B. molecular change
C. physical change
D. chemical change
6. A baker combines flour, sugar, and milk to
make a cake. The baker eats a piece of cake
after it is baked. Which of the following
statements about the baking and digesting of
the cake is true?
A. The ingredients go through physical
changes during baking and digestion.
B. The ingredients go through a chemical
change during baking and a physical change
during digestion.
C. The ingredients go through chemical
changes during baking and digestion.
D. The ingredients go through a physical
change when they are baked and then most
of the ingredients disappear when they are
digested.
WRITTEN RESPONSE
7. Suppose you mix some plastic bears in a
bowl of sand. What could you do to the
mixture of plastic bears and sand to prove to
someone that it was a physical change, not a
chemical change?
8. Give two things to look for in a chemical
change.
ANSWERS:
1. D 2.B 3.A 4.D 5.C 6.C 7.You could separate the plastic bears from the sand to show that it could be reversed. 8.If it fizzes, changes color,
produces light, produces heat, produces bubbles, produces a gas,etc.