Phase Changes (chapter 1)

Front

What is a phase change?

Back

A phase change is a transition of matter from one state (solid, liquid, gas) to another due to changes in temperature or pressure.

Front

What happens to molecules during freezing?

Back

During freezing, molecules lose energy and move closer together, transitioning from a liquid state to a solid state.

Front

What is condensation?

Back

Condensation is the process where gas turns into a liquid, usually when it cools down.

Front

What is melting?

Back

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

Front

What is evaporation?

Back

Evaporation is the process where liquid turns into gas, typically at the surface of the liquid.

Front

What is the difference between boiling and evaporation?

Back

Boiling occurs throughout the liquid at a specific temperature, while evaporation happens only at the surface and can occur at any temperature.

Front

What is sublimation?

Back

Sublimation is the phase change from solid directly to gas without passing through the liquid state.

Front

What is deposition?

Back

Deposition is the phase change from gas directly to solid, bypassing the liquid state.

Front

What is the freezing point of water?

Back

The freezing point of water is 0 degrees Celsius (32 degrees Fahrenheit) at standard atmospheric pressure.

Front

What is the boiling point of water?

Back

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure.