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WorksheetsPhases, Phase Change and Separation
Total questions: 20
Worksheet time: 10mins
In the melting process, when ice and water are both present, the temperature will:
stay at 0ºC
decrease slowly
increase slowly
first increase then decrease
The process of evaporating a liquid and then cooling it back to a liquid state is called ___ . This is done with crude oil.
expansion
vaporization
homogenized
distillation
What happens to the temperature during a phase change?
increases
decreases
stays the same
first increases then decreases
Matter in which the particles are free to move in all directions until they have spread evenly throughout their container is a ___ .
gas
liquid
B.E.C.
solid
Imagine cooling a gas and plotting its temperature on a graph. What would you find on the graph where condensation and freezing was occurring?
a rising curve
a declining curve
a plateau
not enough information given
Two test tubes, X and Y, each containing a clear, colorless liquid and a thermometer were left out in the air at a room whose temperature was 0ºC. The temperatures were read at regular intervals, with the results plotted as seen on the graphs. Based on the graph, what can be said about the liquids in the test tubes?
The liquid in test tube Y could be water.
The liquid in test tube X could be water.
The liquid in test tube X is water.
The liquid in test tube Y is water
Two test tubes, X and Y, each containing a clear, colorless liquid and a thermometer were left out in the air at a room whose temperature was 0ºC. The temperatures were read at regular intervals, with the results plotted as seen on the graphs. During which time interval is the substance in test tube X entirely solid?
All the time.
6 minutes to 14 minutes
No way to know given the information.
14 minutes to 27 minutes
Two test tubes, X and Y, each containing a clear, colorless liquid and a thermometer were left out in the air at a room whose temperature was 0ºC. The temperatures were read at regular intervals, with the results plotted as seen on the graphs. The freezing point of the substance in test tube X is:
50ºC
No way to know given the information.
10ºC
80ºC
The amount of energy to change a material from a solid state to a liquid state is the heat of ___ .
fusion
vaporization
evaporation
condensation
What is happening between A and B?
liquid boiling
liquid freezing
liquid cooling
liquid heating
solid cooling
What is happening between B and C?
liquid boiling
liquid freezing
liquid cooling
liquid heating
solid cooling
What is happening between C and D?
liquid boiling
liquid freezing
liquid cooling
liquid heating
solid cooling
What is the freezing point of the liquid?
20ºC
52ºC
80ºC
Can not determine with the information give.
What is the melting point of the liquid?
20ºC
52ºC
80ºC
Can not determine with the information give.
What is the boiling point of the liquid?
20ºC
52ºC
80ºC
Can not determine with the information give.
Matter that has the least amount of energy is:
solid
plasma
Bose Einstein Condensate (B.E.C.)
liquid
The heat of vaporization is always ___ the heat of fusion for a substance.
the same as
less than
more than
unrelated to
Which of the following is NOT a physical property of a substance?
temperature
color
density
magnetism
The phase change from a solid to a gas without becoming a liquid is called:
deposition
evaporation
flitration
sublimation
If 35 ml of alcohol boils at 80ºC, what is the boiling point of 7 ml of alcohol?
80ºC
11.4ºC
100ºC
16ºC
