Change in Matter

Front

What is a decomposition reaction?

Back

A chemical reaction where a compound breaks down into two or more simpler substances.

Front

What is a precipitate in a chemical reaction?

Back

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

Front

What type of reaction is represented by AB = A + B?

Back

Decomposition reaction.

Front

What is the main difference between a physical change and a chemical change?

Back

A chemical change creates a new substance with different chemical properties.

Front

What are the signs of a chemical reaction?

Back

Gas production, color change, odor, and formation of a precipitate.

Front

What is a synthesis reaction?

Back

A type of chemical reaction where two or more substances combine to form a new compound.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is combustion?

Back

A chemical reaction that occurs when a substance reacts rapidly with oxygen, producing heat and light.

Front

What is a chemical equation?

Back

A symbolic representation of a chemical reaction, showing the reactants and products.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.