Flashcard Classification of Matter with Physical and Chemical Changes

Front

What is the state of matter where molecules are spaced farthest apart?

Back

Gas

Front

What is a pure element?

Back

A substance that consists of only one type of atom.

Front

What are physical changes?

Back

Changes that do not alter the chemical composition of a substance.

Front

What indicates a chemical change has occurred?

Back

The atoms rearranged and formed a new substance.

Front

Is dissolving salt in water a physical or chemical change?

Back

Physical change.

Front

What is a pure compound?

Back

A substance made of two or more different elements that are chemically bonded.

Front

What is a mixture of elements?

Back

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

Front

What is a mixture of compounds?

Back

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

Front

What are examples of physical changes?

Back

Cutting, bending, and dissolving.

Front

What happens to the number of particles in a chemical change?

Back

The number of particles remains the same, but they rearrange to form new substances.