Tutorials

Front

What is a physical change?

Back

A change in the size, shape, or state of matter that does not alter the chemical composition.

Front

What is a chemical change?

Back

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

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Rusting iron.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

What happens to the particles in a solid?

Back

They are closely packed together and vibrate in place.

Front

What happens to the particles in a liquid?

Back

They are close together but can move past one another.