midterm phase change

Front

What are endothermic phase changes?

Back

Endothermic phase changes are processes that absorb heat from the surroundings. Examples include melting, boiling, evaporation, and sublimation.

Front

What is sublimation?

Back

Sublimation is the process in which a solid turns directly into a gas without passing through the liquid phase.

Front

What is required for any change in the state of matter?

Back

A change in energy is required for any change in the state of matter.

Front

What is condensation?

Back

Condensation is the process where water vapor in the air cools and changes back into liquid water, often seen as droplets on a cold surface.

Front

What defines a solid?

Back

A solid has a definite shape and a definite volume, meaning it holds its shape.

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Front

What is the process of melting?

Back

Melting is the phase change from solid to liquid, occurring when a solid absorbs heat.

Front

What is boiling?

Back

Boiling is the rapid vaporization of a liquid that occurs when it is heated to its boiling point.

Front

What is evaporation?

Back

Evaporation is the process by which molecules at the surface of a liquid gain enough energy to enter the gas phase.

Front

What is the difference between evaporation and boiling?

Back

Evaporation occurs at any temperature and only at the surface of the liquid, while boiling occurs at a specific temperature throughout the liquid.