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