Balancing Chemical 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 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 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 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.

Front

Balance the equation: C_6H_{12}O_6 + O_2 → H_2O + CO_2

Back

1, 6, 6, 6

Front

Is the reaction Ca + CuF_2 → CaF_2 + Cu balanced?

Back

Yes, it is balanced.

Front

How many Carbon atoms are in C_4OH_{10}?

Back

4

Front

Balance the equation: AgNO_3 + Cu → Cu(NO_3)_2 + Ag

Back

2 AgNO_3 + 1 Cu → 1 Cu(NO_3)_2 + 2 Ag

Front

Balance the equation: 2Li + Cl_2 → LiCl

Back

2Li + Cl_2 → 2LiCl

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.