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Properties Of Matter
Test Description: Compounds and molecules, states of matter, density
Instructions: Answer all questions to get your test result.
1) Two or more atoms bonded together. Atoms could be the same type or different types.
A
mixture
B
molecule
C
element
D
compound
2) Two or more elements chemically combined
A
mixture
B
compound
C
element
D
molecule
3) Substance of only one type of atom
A
compound
B
element
C
molecule
D
mixture
4) Ratio of mass to volume of a substance.
A
energy
B
atom
C
density
D
temperature
5) NaCl is...
A
a compound
B
a molecule
C
an element
D
a mixture
6) How is density calculated?
A
mass multiplied by volume
B
volume added to mass
C
mass divided by volume
D
volume divided by mass
7) When most substances are heated, what happens to density?
A
density increases because the particles are closer together
B
density increases because the particles are more spaced apart
C
density decreases because the particles are more spaced apart
D
density decreases because the particles are closer together
8) Solid water floats on liquid water. What does this mean for the density?
A
Solid water has less mass
B
Solid water has a lower density than liquid water
C
Solid water has less volume
D
Solid water has a higher density than liquid water
9) What is the MAIN reason there are gaps in bridges?
A
so the sections can expand and shrink when the temperature changes
B
so they can move when cars drive on them
C
so the sections can move in case of an earthquake
D
so water can drain away when it rains
10) The temperature at which a substance is changing from a solid to a liquid (thermal energy is added).
A
condensing point
B
boiling point
C
freezing point
D
melting point
11) The temperature at which a substance is changing from a liquid to a solid (thermal energy is taken away).
A
melting point
B
condensing point
C
boiling point
D
freezing point
12) Which of the following is correct?
A
electrons are negative and are in the nucleus
B
protons are positive and are in the outer shell
C
neutrons are negative and are in the outer shell
D
protons are positive and are in the nucleus
13) A million carbon atoms bonded together would be considered...
A
a compound only
B
an element and molecule
C
an element and a compound
D
a compound and molecule
14) DNA is a molecule made of H, C, O, N, and P bonded together. This makes it...
A
a compound
B
an element
C
a mixture
D
delicious
15) When water boils, bubbles form under the surface of the water and rise to the surface. What is in the bubbles?
A
oxygen
B
air
C
nothing
D
water
16) Breaking a piece of wood in half changes the density in what way?
A
this is the wrong answer, don't pick it! :)
B
decreased density
C
increased density
D
no change
17) Billy spilled water on the floor and was a jerk and didn't clean it up. Molly comes by later and the floor is dry. What happened to the water?
A
The custodian must have seen it and mopped it up
B
The water absorbed into the floor
C
The water changed into a gas
D
There is no water, we are in the matrix
18) Compare the motion of atoms in a solid to a gas of the same substance.
A
solid atoms move very fast and are very far apart
B
gas atoms move very fast and are very far apart
C
solid atoms move fast and are very close together
D
gas atoms move slowly but are still very far apart
19) A substance with a mass of 26 g has a volume of 42 mL. What is its density?
A
16 g/mL
B
1.62 g/mL
C
68 g/mL
D
0.62 g/mL
20) Which of the following could be used to identify a substance?
A
temperature
B
melting point
C
mass
D
volume
*select an answer for all questions
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