Front

What are phase changes?

Back

Phase changes are transitions between different states of matter (solid, liquid, gas) due to changes in temperature and pressure.

Front

Define deposition in the context of phase changes.

Back

Deposition is the process where a gas transforms directly into a solid without passing through the liquid phase.

Front

What is melting?

Back

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

Front

What is sublimation?

Back

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

Front

What is condensation?

Back

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

Front

What is freezing?

Back

Freezing is the phase change from liquid to solid, occurring when a substance loses heat.

Front

What is a phase diagram?

Back

A phase diagram is a graphical representation showing the states of a substance at various temperatures and pressures.

Front

What is the normal boiling point?

Back

The normal boiling point is the temperature at which a liquid's vapor pressure equals the external pressure, typically measured at 1 atm.

Front

What happens to CO2 above 31 °C?

Back

Above 31 °C, CO2 cannot be liquefied regardless of the pressure applied.

Front

What is the state of matter for a substance at high pressure and low temperature?

Back

At high pressure and low temperature, a substance is likely to be in a solid state.