58 Questions
What is the term for the gaseous state of a substance that is normally a liquid or solid at room temperature?
Vapour
What process involves the transformation of a gas to a liquid?
Condensation
What is the term for the process by which a liquid changes to a gas at a temperature below its boiling point?
Evaporation
What is the result of heating a solid to its melting point?
It becomes a liquid
What occurs at a specific temperature called the boiling point?
Boiling
What is the term for the process by which a solid changes to a liquid?
Melting
What is the result of cooling a liquid to its freezing point?
It becomes a solid
What is required for matter to change from one state to another?
The addition or removal of energy
What happens to the particles of a gas when it cools?
They slow down and come closer together
What is an example of condensation?
Water droplets forming on the outside of a cold glass
What is the term for the direct change from solid to gas?
Sublimation
What is the term for the direct change from gas to solid?
Deposition
What happens to the particles of a liquid when it cools and solidifies?
They slow down and lock into fixed positions
What is the term for the process of a liquid changing to a gas?
Evaporation
What is the term for the process of a solid changing to a liquid?
Melting
What is a measure of the average kinetic energy of a substance's particles?
Temperature
What is the primary reason for a change of state to occur?
The gain or loss of energy
What is the result of cooling a gas?
It becomes a liquid
Which of the following processes occurs at a specific temperature?
Boiling
What is the difference between evaporation and boiling?
Evaporation occurs at the surface, while boiling occurs throughout the liquid
What happens to the particles of a solid when it is heated to its melting point?
They vibrate more vigorously
What is the result of heating a liquid?
It becomes a gas
Which of the following processes involves the transformation of a liquid to a solid?
Freezing
What is the term for the change in the form, appearance, nature, or character of a substance?
Transformation
What happens to the particles of a substance when it changes from a solid to a liquid?
They gain energy and move farther apart
What is the direct change from gas to liquid called?
Condensation
What is an example of deposition?
Frost forming on a cold surface
What is the term for the process of a liquid changing to a gas?
Evaporation
What occurs when a liquid is heated to its boiling point?
It boils
What is the result of cooling a gas to its dew point?
It condenses
What happens to the average kinetic energy of a substance's particles when it changes from a liquid to a gas?
It increases
What is the term for the process of a solid changing to a liquid?
Melting
What is the primary reason for a substance to change from solid to liquid?
Increase in average kinetic energy of particles
What happens to the particles of a gas when it is cooled to its dew point?
They slow down and come closer together
What is the difference between melting and solidifying?
Melting involves heating, while solidifying involves cooling
What is the relationship between the temperature of a substance and the kinetic energy of its particles?
As temperature increases, kinetic energy increases
What is an example of a process that involves both condensation and deposition?
Frost forming on a cold window
What is the difference between boiling and evaporation?
Boiling occurs at the surface of a liquid, while evaporation occurs throughout the liquid
What is the result of cooling a gas to a temperature below its dew point?
The gas will condense into a liquid
What is the relationship between the state of matter and the kinetic energy of its particles?
Gases have the highest kinetic energy, followed by liquids, and then solids
What is the primary reason for the particles of a solid to break free from their fixed positions during the melting process?
The particles gain energy and vibrate more vigorously.
What is the result of cooling a liquid to a temperature below its freezing point?
The liquid turns into a solid.
What is the difference between evaporation and boiling in terms of the location of the phase change?
Evaporation occurs at the surface, while boiling occurs throughout the liquid.
What is the result of heating a liquid to a temperature above its boiling point?
The liquid turns into a gas.
What is the term for the process of a gas changing to a liquid when it cools to a temperature below its dew point?
Condensation
What is the result of heating a solid to a temperature below its melting point?
The solid remains in its solid state.
What is the primary reason for a change of state to occur?
The particles gain or lose energy.
What is the term for the transformation of a liquid to a solid?
Freezing
What is the primary reason for a substance to change from one state to another?
The substance gains or loses energy
What occurs when a liquid is heated to its boiling point?
Bubbles form throughout the liquid and rise to the surface
What is the difference between evaporation and boiling?
Evaporation occurs only at the surface, while boiling occurs throughout the liquid
What happens to the particles of a solid when it is heated to its melting point?
They vibrate more vigorously and break free from their fixed positions
What is the result of cooling a gas to its dew point?
The particles condense and change into a liquid
What happens to the average kinetic energy of particles during condensation?
It decreases
Which process occurs when the temperature of a substance is below its melting point?
Solidifying
What is the result of heating a solid to its melting point?
It melts
Which process occurs when a gas changes to a solid without going through the liquid phase?
Deposition
What is the primary reason for a change of state to occur?
A change in temperature
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