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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
boiling
C
fizzing
D
change in odor
2) How can a chemical change be reversed
A
by physical changes
B
by chemical and physical changes
C
none of the answers are correct
D
by chemical changes
3) Which of the following causes a chemical change
A
shattering
B
burning
C
melting
D
moving
4) Which of the following results in a mixture
A
digesting food
B
burning a log
C
baking a cake
D
dissolving salt
5) Which tool is best for separating a mixture of sand and water
A
magnet
B
centrifuge
C
filter
D
tweezers
6) Which of the following is a physical change
A
all of the answers are correct
B
evaporating
C
bending
D
dissolving
7) Matter is defined as anything that
A
has mass and takes up space
B
can be weighed
C
contains kinetic energy
D
can be seen and touched
8) The smallest unit of a substance that behaves like the substance is a(n)
A
element
B
molecule
C
atom
D
compound
9) The chemical for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid
A
7
B
5
C
3
D
6
10) Which of the following is an example of a gas - liquid
A
ice cubes
B
a helium balloon
C
the air we breathe
D
a carbonated drink
*select an answer for all questions
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