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Phys Sci Review 2
Test Description: Content review
Instructions: Answer all questions to get your test result.
1) Sugar dissolved in water is an example of a
A
compound
B
substance
C
element
D
solution
2) Heat is given off in a _______________ reaction
A
substantial
B
chemical
C
exothermic
D
endothermic
3) The rate of speed over time with direction is
A
speed
B
density
C
volume
D
velocity
4) When friction occurs between two objects, what particle is transferred?
A
electron
B
proton
C
proton & neutron
D
neutron
5) The atomic mass number gives the number of
A
protons & neutrons
B
electrons
C
neutrons
D
protons
6) In outer space, a person\'s _____________ will change, but _____________ will stay the same.
A
weight, temperature
B
mass, weight
C
mass, height
D
weight, mass
7) H20 is made up of
A
2 hydrogen atoms and 2 oxygen atoms
B
2 hydrogen atoms and 1 oxygen atoms
C
2 hydrogen atoms
D
1 Hydrogen atom and 2 oxygen atoms
8) Stirring water as sugar is added does what
A
heats up the water dramatically
B
speeds up the rate of dissolving
C
slows down the rate of dissolving
D
cools down the water
9) Besides stirring, what else can speed up the dissolving of a solid?
A
warmer temperature
B
bigger container
C
adding color
D
colder temperature
10) A substance made up of at least 2 elements that are chemically combined is called a
A
mixture
B
gravity
C
compound
D
element
*select an answer for all questions
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