Balancing Chemical Equations

Front

What law governs the balancing of chemical equations?

Back

Law of Conservation of Matter/Mass states that matter cannot be created or destroyed in a chemical reaction.

Front

What are the coefficients that would properly balance the equation H2 + S -> H2S?

Back

1,1 -> 1

Front

What are the coefficients that would properly balance the equation AgNO3 + H2S -> Ag2S + HNO3?

Back

2,1 -> 1,2

Front

What are the coefficients that would properly balance the equation Al + O2 -> Al2O3?

Back

4,3 -> 2

Front

What coefficient should be used to balance the equation N2 + O2 -> _NO?

Back

2

Front

Define a coefficient in the context of chemical equations.

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

What is the purpose of balancing chemical equations?

Back

To ensure that the same number of each type of atom appears on both sides of the equation, reflecting the conservation of mass.

Front

What is a reactant in a chemical equation?

Back

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

Front

What is a product in a chemical equation?

Back

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

Front

What does it mean if a chemical equation is unbalanced?

Back

It means that the number of atoms of each element is not the same on both sides of the equation.