Balancing Equations

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 are reactants in a chemical equation?

Back

Reactants are the substances that undergo a chemical change in a reaction, found on the left side of a chemical equation.

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction, found on the right side of a chemical equation.

Front

What do coefficients in a chemical equation represent?

Back

Coefficients are the numbers placed before compounds in a chemical equation to indicate the number of molecules or moles of that substance.

Front

What do subscripts in a chemical formula indicate?

Back

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

Front

How do you determine if a chemical equation is balanced?

Back

Count the number of atoms of each element on both sides of the equation. If they are equal, the equation is balanced.

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 is conserved.

Front

What is the total mass of products if 8 grams of iron and 5 grams of sulfur react?

Back

The total mass of products is equal to 13 grams, which is the sum of the masses of the reactants.

Front

What is the yield in a chemical reaction?

Back

Yield refers to the amount of product obtained from a reaction, often expressed as a percentage of the theoretical maximum.

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.