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Phase Changes Review
Test Description: Phase changes and states of matter
Instructions: Answer all questions to get your test result.
1) Which of the following properties would you expect of a solid?
A
shape determined by its container
B
compressible
C
low melting point
D
a fixed shape
2) Which of the following is not a property of particles in a gas?
A
The particles are well separated with no pattern of arrangement.
B
The particles move about freely at high speeds.
C
The particles are non-compressible.
D
The particles assume the volume of their container.
3) A scientist obtains a microscopic view of a certain substance. She finds evidence of the molecules in a regular pattern that is rigid, the particles cannot slide past one another. She must be observing which state of matter?
A
Gas
B
Liquid
C
Plasma
D
Solid
4) Imagine a liquid being transferred between multiple containers, which of the following statements best describes what is happening to the liquid?
A
That there is little free space between particles.
B
That liquids are not easily compressible.
C
That the particles can slide past one another.
D
That the liquid takes the shape of the container.
5) Two full 0.5 L bottles of water are placed on a table. Bottle 1 was just removed from the refrigerator and Bottle 2 is at room temperature. Which of the following best describes the speed of the molecules in each bottle?
A
The molecules in Bottle 1 are not moving.
B
The molecules in Bottle 2 are moving faster than the molecules in Bottle 1.
C
The molecules in Bottle 1 are moving faster than the molecules in Bottle 2.
D
The molecules in both bottles have the same speed.
6) A substance has molecules that are loosely bound, allowing them to flow freely around each other. The substance will take the shape of its container. This substance must be a —
A
liquid
B
gas
C
plasma
D
solid
7) Imagine that a substance's molecules are able to move around freely. Which of these conclusions about the unknown substance is best supported by these data?
A
It is a metal
B
It is a crystal
C
It is a gas
D
It will sink in water
8) A(n) _________ is a physical combination of two or more different substances.
A
element
B
mixture
C
molecule
D
compound
9) A(n) _______ is when multiple atoms or molecules of the same type are joined together.
A
molecule
B
mixture
C
element
D
compound
10) A(n) ______ is the name given when atoms (whether identical or different) are joined together by chemical bonds.
A
molecule
B
element
C
mixture
D
compound
11) A(n) _______ is only when non-identical atoms join together by chemical bonds
A
molecule
B
mixture
C
element
D
compound
12) An example of a chemical property is —
A
acidity
B
solubility
C
mass
D
density
13) What is the density at 15 0 C of 18.0 milliliters of a liquid that has a mass of 53.64 grams?
A
34.05 g/mL
B
0.336 g/mL
C
2.98 g/mL
D
11.95 g/mL
14) Which of the following objects will float on water?
A
mass = 70 g volume = 75 cm3
B
mass = 65 g volume = 60 cm3
C
mass = 55 g volume = 50 cm3
D
mass = 60 g volume = 55 cm3
15) What is the density at 27 °C of 28.0 milliliters of a liquid that has a mass of 4.05 grams?
A
0.145 g/mL
B
32.05 g/mL
C
6.91 g/mL
D
23.95 g/mL
16) What is the mass of a 600.00 mL sample of seawater with a density of 1.025 g/mL?
A
585.4 g
B
600 g
C
615 g
D
725.0 g
17) Viscosity is a measure of a fluid's internal resistance to flowing. Which of the following situations will cause the liquid's viscosity to increase?
A
increase the flow
B
decrease the volume
C
decrease the temperature
D
increase the temperature
18) What is the name of process of changing from a solid to a gas?
A
depositon
B
sublimation
C
vaporization
D
condensation
19) The particles of which state of matter would have the lowest kinetic energy?
A
liquid
B
gas
C
solid
D
all of the above
20) What is the name of process of changing from a gas to a solid?
A
depositon
B
condensation
C
vaporization
D
sublimation
*select an answer for all questions
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