Balancing Chemical Equations

Front

What is the balanced equation for the decomposition of hydrogen peroxide (H2O2)?

Back

2 H2O2 --> 2 H2O + O2

Front

In the reaction 2HBr + Mg(OH)2 → MgBr2 + 2H2O, identify the reactant.

Back

HBr

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

Is the reaction Ca + CuF2 → CaF2 + Cu balanced?

Back

Yes

Front

What is the balanced equation for the reaction of sodium and chlorine gas to form sodium chloride?

Back

2 Na + Cl2 --> 2 NaCl

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

How do you determine if a chemical equation is balanced?

Back

By ensuring that the number of atoms of each element is the same on both sides of the equation.

Front

What is the significance of coefficients in a balanced chemical equation?

Back

Coefficients indicate the relative amounts of reactants and products involved in the reaction.

Front

What is the role of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule.