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Density
Test Description: Vocabulary and comparing densities of objects
Instructions: Answer all questions to get your test result.
1) An object is most likely to sink in water if ___________________________.
A
it has a large mass
B
it has a high density
C
it has a low density
D
it has a large volume
2) Which of the following is a unit for density?
A
mL
B
g/mL
C
g
D
cm^3
3) What is density?
A
all of the above
B
a ratio of mass to volume
C
how tightly packed the molecules are in an object
D
the comparison of how much matter in an object to how much space it takes up
4) Liquid water is more dense than ice because _______________________.
A
liquid water molecules have more mass than ice molecules
B
when ice melts there is an increase in the amount of molecules
C
the volume of the liquid increases when it freezes
D
a chemical change occurs as ice melts that causes the mass of the water to increase
5) Two liquids, A and B, have densities 0.75 g/mL and 1.14 g/mL respectively. When both liquids are poured into a container, which liquid floats on top?
A
both; they keep trading places like a lava lamp
B
B
C
neither; they mix evenly
D
A
6) A substance is cut into several pieces. As compared to the density of the original sample, the density of each piece will be ________________.
A
less
B
the same
C
greater
D
none of the above
7) If a sphere is heated which of the following is most likely to occur?
A
the volume of the sphere will increase but its density will decrease
B
both the volume and the density will increase
C
the volume of the sphere will decrease but its density will increase
D
both the volume and the density will decrease
8) Which characteristic of an object will always change as the object travels from the Earth to the Moon?
A
volume
B
mass
C
density
D
weight
9) An object has a mass of 10 grams and a volume of 2 mL. What is the density of the object?
A
0.2 g/mL
B
12 g/mL
C
20 g/mL
D
5 g/mL
10) Oil floats on water. The most accurate reason for this is ______________________.
A
oil is immiscible (does not dissolve) in water
B
oil is both less dense and immiscible with water
C
water is heavier than oil
D
oil is less dense than water
*select an answer for all questions
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