SEEd 5.2.3-4 Changes in Matter

Front

What is a physical change?

Back

A physical change is a change in which the form or appearance of a substance changes, but its chemical composition remains the same.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

What are the three states of matter?

Back

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

Front

What happens to the particles in a solid?

Back

In a solid, particles are closely packed together and vibrate in place.

Front

What happens to the particles in a liquid?

Back

In a liquid, particles are close together but can move past one another, allowing liquids to flow.

Front

What happens to the particles in a gas?

Back

In a gas, particles are far apart and move freely, filling the space available.

Front

What is melting?

Back

Melting is the process of a solid turning into a liquid when heat is applied.

Front

What is freezing?

Back

Freezing is the process of a liquid turning into a solid when heat is removed.

Front

What is crumpling?

Back

Crumpling is a physical change where a material is wrinkled or crushed without changing its chemical composition.

Front

What is an example of a chemical change?

Back

An example of a chemical change is mixing baking soda and vinegar, which produces carbon dioxide gas.