Review: Changes in Matter

Front

What is a mixture?

Back

A mixture is a combination of many different elements not chemically combined.

Front

What does the law of conservation of mass state?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is one sign of a chemical reaction?

Back

One sign of a chemical reaction is the production of bubbles.

Front

What is the smallest particle in an element or compound?

Back

An atom is the smallest particle in an element or compound.

Front

What is a compound?

Back

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

Front

What is an element?

Back

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

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

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What is a reactant?

Back

A reactant is a substance that takes part in and undergoes change during a reaction.

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What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed from two or more elements chemically bonded, while a mixture is a combination of substances that are not chemically bonded.