Chemical Reactions

Front

What is a chemical reaction?

Back

A process where substances (reactants) undergo a transformation to form new substances (products).

Front

What evidence indicates that a chemical reaction has occurred?

Back

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

Front

What is the reactivity series?

Back

A list of metals arranged in order of decreasing reactivity, used to predict how metals will react with other substances.

Front

What happens during a decomposition reaction?

Back

A single compound breaks down into two or more simpler substances.

Front

What is a synthesis reaction?

Back

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

Front

What is a single replacement reaction?

Back

A reaction where one element replaces another in a compound.

Front

What is a combustion reaction?

Back

A chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat.

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not alter the chemical composition of a substance, while chemical changes do.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

What is the role of catalysts in chemical reactions?

Back

Catalysts speed up chemical reactions without being consumed in the process.