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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
solution
B
element
C
substance
D
compound
2) Heat is given off in a _______________ reaction
A
substantial
B
exothermic
C
chemical
D
endothermic
3) The rate of speed over time with direction is
A
volume
B
speed
C
density
D
velocity
4) When friction occurs between two objects, what particle is transferred?
A
electron
B
neutron
C
proton & neutron
D
proton
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
mass, weight
B
weight, temperature
C
mass, height
D
weight, mass
7) H20 is made up of
A
2 hydrogen atoms and 1 oxygen atoms
B
2 hydrogen atoms and 2 oxygen atoms
C
1 Hydrogen atom and 2 oxygen atoms
D
2 hydrogen atoms
8) Stirring water as sugar is added does what
A
cools down the water
B
heats up the water dramatically
C
slows down the rate of dissolving
D
speeds up the rate of dissolving
9) Besides stirring, what else can speed up the dissolving of a solid?
A
warmer temperature
B
adding color
C
colder temperature
D
bigger container
10) A substance made up of at least 2 elements that are chemically combined is called a
A
element
B
compound
C
gravity
D
mixture
*select an answer for all questions
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