Modeling Chemical Reactions

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

What is a combustion reaction?

Back

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

Front

What is the chemical formula for hydrogen peroxide?

Back

The chemical formula for hydrogen peroxide is H₂O₂.

Front

What happens to the mass of reactants and products in a chemical reaction?

Back

The total mass of the reactants is equal to the total mass of the products in a closed system.

Front

What is a gas in the context of chemical reactions?

Back

A gas is a state of matter that can be produced in a chemical reaction, often escaping into the atmosphere.

Front

What is a precipitate?

Back

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

Front

What does it mean for a chemical equation to be unbalanced?

Back

An unbalanced chemical equation has different numbers of atoms of one or more elements on each side of the equation.