Balancing Reactions

Front

What is a Single Displacement Reaction?

Back

A reaction where one element replaces another in a compound, e.g., 2 K + MgBr2 → 2 KBr + Mg.

Front

What are the coefficients needed to balance the reaction: PCl5 + _ H2O → _ HCl + H3PO4?

Back

4, 5.

Front

How do you balance the combustion reaction: C3H8 + _ O2 → _ CO2 + _ H2O?

Back

1, 5, 3, 4.

Front

What is the balanced equation for the reaction: Al + Fe3N2 → __ AlN + __ Fe?

Back

2, 1, 2, 3.

Front

What evidence indicates a chemical reaction has occurred?

Back

Formation of a gas.

Front

Define a Synthesis Reaction.

Back

A reaction where two or more substances combine to form a new compound, e.g., A + B → AB.

Front

What is a Decomposition Reaction?

Back

A reaction where a single compound breaks down into two or more simpler products, e.g., AB → A + B.

Front

Explain a Double Displacement Reaction.

Back

A reaction where two compounds exchange ions to form two new compounds, e.g., AB + CD → AD + CB.

Front

What is the Law of Conservation of Mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.