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Ch 2
Test Description: Physical Science
Instructions: Answer all questions to get your test result.
1) Which of the following is not a potential sign of a chemical change?
A
change in color
B
fizzing
C
boiling
D
change in odor
2) How can a chemical change be reversed
A
by physical changes
B
by chemical and physical changes
C
by chemical changes
D
none of the answers are correct
3) Which of the following causes a chemical change
A
shattering
B
burning
C
moving
D
melting
4) Which of the following results in a mixture
A
digesting food
B
burning a log
C
dissolving salt
D
baking a cake
5) Which tool is best for separating a mixture of sand and water
A
centrifuge
B
filter
C
magnet
D
tweezers
6) Which of the following is a physical change
A
bending
B
all of the answers are correct
C
evaporating
D
dissolving
7) Matter is defined as anything that
A
contains kinetic energy
B
can be seen and touched
C
has mass and takes up space
D
can be weighed
8) The smallest unit of a substance that behaves like the substance is a(n)
A
atom
B
molecule
C
compound
D
element
9) The chemical for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid
A
6
B
3
C
7
D
5
10) Which of the following is an example of a gas - liquid
A
the air we breathe
B
ice cubes
C
a carbonated drink
D
a helium balloon
*select an answer for all questions
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