Balancing Chemical Equations - Practice

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 a chemical 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 the 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 the equation.

Front

What does the coefficient in a chemical equation represent?

Back

The coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

How do you determine the total number of atoms in a compound?

Back

To find the total number of atoms, multiply the subscript of each element by the coefficient and sum them up.

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.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products until the number of atoms of each element is equal on both sides.

Front

What is the significance of the yields sign (→) in a chemical equation?

Back

The yields sign indicates the direction of the reaction, separating reactants from products.

Front

What is the balanced equation for the reaction of aluminum and bromine?

Back

2 Al + 3 Br₂ → 2 AlBr₃.

Front

What is the balanced equation for the combustion of phosphorus?

Back

1 P₄ + 5 O₂ → 2 P₂O₅.