Chemical Reactions

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products) through the breaking and forming of chemical bonds.

Front

What evidence indicates a chemical reaction has occurred?

Back

Formation of a new substance, color change, gas production (bubbles), or heat release.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, the total mass of the reactants must equal the total mass of the products.

Front

What happens to atoms during a chemical reaction?

Back

Atoms are rearranged to form new substances, but they are neither created nor destroyed.

Front

What is a reactant?

Back

A substance that undergoes change in a chemical reaction.

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What is a product?

Back

A new substance formed as a result of a chemical reaction.

Front

What is a sign of a chemical reaction?

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Formation of a precipitate, gas production, color change, or temperature change.

Front

What is a phase change?

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A transition of matter from one state (solid, liquid, gas) to another without changing its chemical composition.

Front

What is a decomposition reaction?

Back

A type of chemical reaction where one compound breaks down into two or more simpler substances.

Front

What is a synthesis reaction?

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A type of chemical reaction where two or more reactants combine to form a single product.