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