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States Of Matter
Test Description: 7th grade
Instructions: Answer all questions to get your test result.
1) which of the following molecule is a hydrocarbon?
A
CH4
B
CO2
C
H2O
D
O2
2) Water is known as the universal _______ because it dissolves many things
A
dissolver
B
suspension
C
solvent
D
solution
3) which is true about elements and compounds?
A
elements and compounds have more than one element in them
B
they are both pure substances
C
they are both found on the periodic table
D
elements are pure, while compounds have more than one element in them
4) which of the following is an example of exothermic reaction?
A
melting an ice cubee
B
boiling water
C
photosynthesis
D
burning wood
5) which of the following is evidence that a chemical reaction has taken place
A
the production of a shard of glass after breaking a glass bottle
B
the puddle after melting an ice cube
C
the presence of an odor after burning a sugar cube
D
the loud noise from splitting an ionic compound
6) The law of conservation of mass states that
A
mass sometimes increases when the state of something changes
B
that mass cannot always be determined
C
hydrocarbon
D
Mass stays the same even as something changes state, it is always conserved
7) melting is this type of change
A
long
B
physical
C
short
D
chemical
8) boiling is this type of change
A
chemical
B
it depends on what is boiling
C
pysical
D
both physical and chemical
9) which of the following can speed up the rate of chemical reaction?
A
lowering temperature
B
breaking out the reactant into smaller pieces
C
removing the catalyst
D
lowering the reactant concentration
10) matter in a frozen state has
A
no energy it is too cold
B
the same energy
C
more energy
D
less energy
11) which is a chemical property of matter?
A
texture
B
flammability
C
density
D
color
12) in this type of reaction energy is released
A
endothermic
B
exothermic
C
nuclear radiation
D
nuclear fusion
13) the three most common states of matter
A
solid, liquid, gas
B
colloid, suspension, solution
C
metal, nonmetal, metalloids
D
solid, suspension, colloid
14) If you can see particles in a mixture it is probably a
A
solution
B
water
C
suspension
D
pure
15) matter in a gas state have much __________energy than matter in a solid state
A
greater
B
more
C
of the same
D
less
16) which is a chemical property of water?
A
water reacts with some metals (oxidation)
B
the water's volume is 200mL
C
water boils at 100 degrees C
D
water freezes at 0 degrees C
17) the measure of kinetic energy
A
volume
B
temperature
C
density
D
mass
18) this causes something to change state
A
eating
B
smashing
C
temperature
D
crushing
19) If you cannot see any particles and light can pass straight through, then it is probalbly this type of mixture
A
pure solution
B
a suspension
C
a colloid
D
water mixture
20) this is a property that only solids have
A
has a definite shape
B
definite shape and volume
C
particles that are always in motion
D
particles that no longer move at all not even vibrate
*select an answer for all questions
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