Chemical Reactions

Front

Tiny pieces of matter that everything is made of

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atoms

Front

An object, diagram, or computer program that helps us understand something by making it simpler or easier to see

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model

Front

Something that can be observed about a substance, such as color, smell, or boiling point

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property

Front

A process in which atoms rearrange to form new substances.

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chemical reaction

Front

Something that is made of all the same atoms or groups of atoms

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substance

Front

A group of atoms joined together in a particular way

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molecule

Front

In a chemical equation, are the reactants the beginning substances or the ending substances?

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beginning

Front

In a chemical equation, are the products the beginning substances or the ending substances?

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ending

Front

During a chemical reaction, atoms can:

• be destroyed to form a new substance
• be created to form a new substance
• be rearranged to form a new substance

Back

be rearranged to form a new substance

Front

Burning paper is an example of a

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chemical reaction