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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
O2
B
CH4
C
H2O
D
CO2
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 are pure, while 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 and compounds have more than one element in them
4) which of the following is an example of exothermic reaction?
A
photosynthesis
B
burning wood
C
boiling water
D
melting an ice cubee
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 sometimes increases when the state of something changes
B
hydrocarbon
C
that mass cannot always be determined
D
Mass stays the same even as something changes state, it is always conserved
7) melting is this type of change
A
short
B
chemical
C
long
D
physical
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
removing the catalyst
B
lowering the reactant concentration
C
breaking out the reactant into smaller pieces
D
lowering temperature
10) matter in a frozen state has
A
less energy
B
more energy
C
no energy it is too cold
D
the same energy
11) which is a chemical property of matter?
A
flammability
B
color
C
density
D
texture
12) in this type of reaction energy is released
A
nuclear radiation
B
exothermic
C
nuclear fusion
D
endothermic
13) the three most common states of matter
A
solid, suspension, colloid
B
solid, liquid, gas
C
colloid, suspension, solution
D
metal, nonmetal, metalloids
14) If you can see particles in a mixture it is probably a
A
suspension
B
pure
C
solution
D
water
15) matter in a gas state have much __________energy than matter in a solid state
A
more
B
greater
C
of the same
D
less
16) which is a chemical property of water?
A
water reacts with some metals (oxidation)
B
water boils at 100 degrees C
C
water freezes at 0 degrees C
D
the water's volume is 200mL
17) the measure of kinetic energy
A
density
B
temperature
C
mass
D
volume
18) this causes something to change state
A
smashing
B
temperature
C
eating
D
crushing
19) If you cannot see any particles and light can pass straight through, then it is probalbly this type of mixture
A
a colloid
B
pure solution
C
water mixture
D
a suspension
20) this is a property that only solids have
A
definite shape and volume
B
particles that no longer move at all not even vibrate
C
has a definite shape
D
particles that are always in motion
*select an answer for all questions
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