Physical and Chemical Changes & Describing Matter

Front

What is a physical change?

Back

A physical change is a change in appearance, shape, size, or state of matter without forming a new substance.

Front

What is a chemical change?

Back

A chemical change involves the formation of one or more new substances with different properties from the original substances.

Front

Does a physical change result in the formation of a new substance?

Back

No, a physical change does not result in the formation of a new substance.

Front

Does a chemical change involve a change in phase?

Back

Not necessarily; a chemical change does not have to involve a phase change.

Front

What is an example of a physical change?

Back

Melting ice, boiling water, or breaking a glass are examples of physical changes.

Front

What is an example of a chemical change?

Back

Rusting iron, burning wood, or baking a cake are examples of chemical changes.

Front

What is matter?

Back

Matter is anything that has mass and occupies space.

Front

What are the three states of matter?

Back

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

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.