Chemical Reactions

Front

What is a combustion reaction?

Back

A combustion reaction is a chemical reaction that starts with a hydrocarbon reacting with oxygen, producing carbon dioxide and water.

Front

What are the starting materials in a chemical reaction called?

Back

The starting materials in a chemical reaction are called reactants.

Front

What is the product of the decomposition of hydrogen peroxide (H2O2)?

Back

The decomposition of hydrogen peroxide produces water (H2O) and oxygen (O2).

Front

What is the balanced equation for the combustion of propane (C3H8)?

Back

The balanced equation is C3H8 + 5O2 → 3CO2 + 4H2O.

Front

What are coefficients in a chemical equation?

Back

Coefficients are the numbers placed in front of compounds in a chemical equation to indicate the number of molecules involved in the reaction.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure the same number of each type of atom on both sides.

Front

What is a reactant?

Back

A reactant is a substance that undergoes a chemical change in a 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 the balanced equation for the reaction of potassium chlorate (KClO3) decomposing?

Back

The balanced equation is 2KClO3 → 2KCl + 3O2.

Front

What is the significance of the law of conservation of mass in chemical reactions?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.