AAD Law of Conservation of Mass

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

How many atoms are in a molecule of water (H2O)?

Back

A molecule of water (H2O) contains 3 atoms: 2 Hydrogen atoms and 1 Oxygen atom.

Front

What does it mean for a chemical reaction to be balanced?

Back

A chemical reaction is balanced when both sides of the equation have the same number of each type of atom.

Front

How many Hydrogen atoms are in 4H2O?

Back

There are 8 Hydrogen atoms in 4H2O.

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 the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in a reaction.

Front

How many nitrogen atoms are in NH3?

Back

There is 1 nitrogen atom in NH3.

Front

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

Back

The total mass of the reactants is equal to the total mass of the products.

Front

What is a chemical equation?

Back

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