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Which phrase describes the changes that take place when a gas condenses?
Energy is transferred from the water into the air.
X = 50; Y = 100; Z = 150
The average kinetic energy of the ice particles is lower.
balls far apart with long arrows between them
a phase change is taking place
loss of energy and decreased freedom of particle motion
a purely physical change because it will change state
The substance changed from a liquid to a gas.
Which of these could represent the temperature values of a liquid X, a boiling liquid Y, and a gas Z?
Energy is transferred from the water into the air.
X = 50; Y = 100; Z = 150
The average kinetic energy of the ice particles is lower.
balls far apart with long arrows between them
a phase change is taking place
loss of energy and decreased freedom of particle motion
a purely physical change because it will change state
The substance changed from a liquid to a gas.
What change of state occurred to a substance in a beaker, when thermal energy was added?
Energy is transferred from the water into the air.
X = 50; Y = 100; Z = 150
The average kinetic energy of the ice particles is lower.
balls far apart with long arrows between them
a phase change is taking place
loss of energy and decreased freedom of particle motion
a purely physical change because it will change state
The substance changed from a liquid to a gas.
Explain what happens to mercury atoms due to added thermal energy, during the time in which temperature stays the same.
Energy is transferred from the water into the air.
X = 50; Y = 100; Z = 150
The average kinetic energy of the ice particles is lower.
balls far apart with long arrows between them
a phase change is taking place
loss of energy and decreased freedom of particle motion
a purely physical change because it will change state
The substance changed from a liquid to a gas.
Which energy transfer takes place when water freezes to form ice crystals in the atmosphere?
Energy is transferred from the water into the air.
X = 50; Y = 100; Z = 150
The average kinetic energy of the ice particles is lower.
balls far apart with long arrows between them
a phase change is taking place
loss of energy and decreased freedom of particle motion
a purely physical change because it will change state
The substance changed from a liquid to a gas.
Describe how you would sketch the spacing and motion of the molecules in the gas state above the liquid surface. Balls=molecules, long arrows=fast motion.
Energy is transferred from the water into the air.
X = 50; Y = 100; Z = 150
The average kinetic energy of the ice particles is lower.
balls far apart with long arrows between them
a phase change is taking place
loss of energy and decreased freedom of particle motion
a purely physical change because it will change state
The substance changed from a liquid to a gas.
A beaker of ice and water are warming on a hot plate. How is the liquid water, as it is warming, different from the ice?
Energy is transferred from the water into the air.
X = 50; Y = 100; Z = 150
The average kinetic energy of the ice particles is lower.
balls far apart with long arrows between them
a phase change is taking place
loss of energy and decreased freedom of particle motion
a purely physical change because it will change state
The substance changed from a liquid to a gas.
What type of change would you expect the heated ice to undergo?
Energy is transferred from the water into the air.
X = 50; Y = 100; Z = 150
The average kinetic energy of the ice particles is lower.
balls far apart with long arrows between them
a phase change is taking place
loss of energy and decreased freedom of particle motion
a purely physical change because it will change state
The substance changed from a liquid to a gas.
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