Chemical Reactions Test Review

Front

What is a chemical change?

Back

A chemical change is a process that results in the formation of one or more new substances with different properties from the original substances.

Front

What is the general representation of a decomposition reaction?

Back

AB → A + B

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is the chemical formula for carbon dioxide?

Back

CO₂

Front

How can you identify a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the law of conservation of mass?

Back

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

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What are products in a chemical reaction?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What is a synthesis reaction?

Back

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