Balancing and Types of Reactions

Front

What is a Decomposition Reaction?

Back

A reaction where a single compound breaks down into two or more simpler products. Example: 2 H₃AsO₄ → As₂O₅ + 3 H₂O.

Front

How do you balance a chemical equation?

Back

By adjusting the coefficients in front of the compounds to ensure the same number of each type of atom on both sides of the equation.

Front

What are Coefficients in a chemical equation?

Back

Numbers placed in front of compounds to indicate how many molecules or moles of that substance are involved in the reaction.

Front

What is the balanced equation for CH₄ + O₂ → CO₂ + H₂O?

Back

1 CH₄ + 2 O₂ → 1 CO₂ + 2 H₂O.

Front

What is the purpose of balancing chemical equations?

Back

To obey the Law of Conservation of Mass, which states that matter cannot be created or destroyed in a chemical reaction.

Front

What is a Synthesis Reaction?

Back

A reaction where two or more reactants combine to form a single product. Example: A + B → AB.

Front

What is a Single Displacement Reaction?

Back

A reaction where one element replaces another in a compound. Example: A + BC → AC + B.

Front

What is a Combustion Reaction?

Back

A reaction where a substance combines with oxygen, releasing energy in the form of light or heat. Example: CH₄ + 2 O₂ → CO₂ + 2 H₂O.

Front

What is the balanced equation for H₂SO₄ + NaNO₂ → HNO₂ + Na₂SO₄?

Back

1 H₂SO₄ + 2 NaNO₂ → 2 HNO₂ + 1 Na₂SO₄.

Front

What is the balanced equation for Al + HCl → AlCl₃ + H₂?

Back

2 Al + 6 HCl → 2 AlCl₃ + 3 H₂.