Changes of State
False
Ice changes directly to water vapor through the process of deposition.
False
Iron melts at a lower temperature than water.
True
The average kinetic energy of particles of matter can be measured with a thermometer.
D) 100*C
The boiling point of water: is A) 0*C B) 32*F C) 98*F D) 100*C
Freezing
The temperature at which a liquid changes to a solid is its ___________ point.
False
Vaporization explains why a mud puddle dries up on a sunny day.
A gas changes directly to a solid
What is deposition?
A solid Shane's directly to a gas
What is sublimation?
The process to change from a gas to a liquid is called condensation. This occurs when water vapor comes in contact with a substance with or is cooled to a lower temperature. The particles of the gas lose kinetic energy and change into a liquid.
Which process changes a gas to a liquid? What happens during this process?
A) They involve energy
Which statement is true about changes of state? A) They involve energy B) They cannot be undone C) They involve chemical processes D) They change the chemical makeup of matter
C) It happens more quickly at higher temperatures
Which statement is true about evaporation? A) It occurs when a liquid boils B) It occurs when a liquid reaches its boiling point C) It happens more quickly at higher temperatures D) all of these
Temperature
______ is the average kinetic energy of particles of matter.
False
A gas changes directly to a solid by freezing.
Boiling
A gas condenses when it is cooled below its __________ point.
True
A liquid can change to a gas without boiling.
False
All matter has the same freezing and boiling points.
Physical
Changes of state are ______ in matter.
Energy
During a change a state ______ is either lost or gained.
True
Evaporation occurs only at the exposed surface of a liquid.
Temperature is the average kinetic energy in the particles of matter. How matter changes state depends on the amount of kinetic energy in the particles, or the temperature. For example, when a solid's temperature increases, it changes into a liquid or a gas.
Explain how temperature of matter is related to changes of state.
A) the water loses energy
Liquid water changes ice when A) the water loses energy B) the water gains energy C) melting occurs C) two of the above
False
Matter rarely changes state.
B) liquid
Melting point is the temperature at which matter changes to a A) gas B) liquid C) solid D) plasma
Deposition
Process in which a gas changes directly to a solid
Condensation
Process in which a gas changes to a liquid
Vaporization
Process in which a liquid boils and changes to a gas
Evaporation
Process in which a liquid changes to a gas without boiling
Freezing
Process in which a liquid changes to a solid
Sublimation
Process in which a solid changes directly to a gas
Melting
Process in which a solid changes to a liquid
True
The melting point of a substance is the same as its freezing point.
0*Celsius
The melting point of ice is ____ Celsius.
C) Condensation
The process in which clouds form is A) sublimation B) evaporation C) Condensation D) None of these
Deposition
The process in which frost forms on a window is __________.
