CONSERVATION OF MASS AND BALANCING EQUATIONS

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. The total mass of reactants equals the total mass of products.

Front

How do you balance a chemical equation?

Back

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

Front

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

Back

A chemical equation is balanced when the same number of each kind of atom appears in the reactants and in the products.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula in an equation to indicate how many molecules or moles of that substance are involved in the reaction.

Front

What is the purpose of balancing chemical equations?

Back

Balancing chemical equations ensures that the Law of Conservation of Mass is obeyed, meaning that the mass of reactants equals the mass of products.

Front

Back

Front

What is the balanced equation for the reaction of magnesium and hydrochloric acid?

Back

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction, appearing on the left side of a chemical equation.

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, appearing on the right side of a chemical equation.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule. For example, in H₂O, the subscript '2' indicates there are two hydrogen atoms.