Changes of States of Matter

Front

What is sublimation?

Back

Sublimation is the process where a solid changes directly into a gas without passing through the liquid state. An example is dry ice (solid carbon dioxide) turning into carbon dioxide gas.

Front

What is evaporation?

Back

Evaporation is the process of a liquid turning into a gas at the surface of the liquid. It occurs at any temperature and is a key part of the water cycle.

Front

What is boiling?

Back

Boiling is the rapid vaporization of a liquid that occurs when it reaches its boiling point, where the vapor pressure equals the atmospheric pressure.

Front

What is condensation?

Back

Condensation is the process where a gas turns into a liquid when it cools down. An example is water droplets forming on a cold glass.

Front

What is the difference between evaporation and boiling?

Back

Evaporation occurs at the surface of a liquid at any temperature, while boiling occurs throughout the liquid at a specific temperature (boiling point).

Front

What happens during melting?

Back

Melting is the process where a solid turns into a liquid when it absorbs heat. An example is ice melting into water.

Front

What is freezing?

Back

Freezing is the process where a liquid turns into a solid when it loses heat. An example is water freezing into ice.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth, involving processes like evaporation, condensation, and precipitation.

Front

What is the role of temperature in changes of state?

Back

Temperature affects the energy of particles; higher temperatures can cause melting and boiling, while lower temperatures can lead to freezing and condensation.

Front

What is the significance of the boiling point?

Back

The boiling point is the temperature at which a liquid's vapor pressure equals the external pressure, causing it to boil.