Physical and Chemical Changes, States of Matter

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include burning, rusting, and cooking.

Front

What happens during melting?

Back

Melting is the process where a solid turns into a liquid when heat is applied. For example, heating ice causes it to melt into water.

Front

What is an example of a solid turning into a liquid?

Back

An example is heating a block of ice until it turns into water.

Front

What is an example of a liquid turning into a gas?

Back

An example is steam escaping from a cup of hot chocolate.

Front

What is an example of a chemical change?

Back

An example of a chemical change is paper being burned.

Front

What is the state of matter for water at 0 degrees Celsius?

Back

At 0 degrees Celsius, water can exist as both a solid (ice) and a liquid (water) depending on the conditions.

Front

What is condensation?

Back

Condensation is the process where a gas turns into a liquid, often seen when water vapor cools and forms droplets.

Front

What is evaporation?

Back

Evaporation is the process where a liquid turns into a gas, such as when water heats up and becomes steam.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not create new substances, while a chemical change does.