Matter Test Review #2

Front

What is a pure substance that cannot be broken down into other substances by chemical or physical means?

Back

Element

Front

Is a pure substance defined as something that has uniform and definite composition?

Back

Yes

Front

What is the difference between natural and synthetic resources?

Back

Natural resources occur in nature, synthetic resources are man-made.

Front

What is the definition of matter?

Back

Anything that has mass and takes up space.

Front

How many oxygen atoms are in the compound HMgCO3?

Back

3

Front

What is an atom?

Back

The smallest unit of a chemical element, consisting of protons, neutrons, and electrons.

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 the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.