UNIT ASSESSSMENT REVIEW FOR FINALS

Front

What type of reaction is Zn + HCl → H₂ + ZnCl₂?

Back

Single Replacement: A reaction where one element replaces another in a compound.

Front

Balance the following: ____ Al + ____ O₂ → ____ Al₂O₃

Back

4, 3, 2: The balanced equation shows 4 aluminum atoms, 3 oxygen molecules, producing 2 aluminum oxide molecules.

Front

What type of reaction is SeCl₆ + O₂ → SeO₂ + Cl₂?

Back

Single Replacement: A reaction where one element replaces another in a compound.

Front

Which generalized equation represents a single replacement reaction?

Back

A + BC → AC + B: This equation shows one element displacing another in a compound.

Front

What type of reaction is 2 NaBr + 1 Ca(OH)₂ → 1 CaBr₂ + 2 NaOH?

Back

Double Replacement: A reaction where two compounds exchange components.

Front

Define Synthesis Reaction.

Back

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

Front

Define Decomposition Reaction.

Back

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

Front

Define Combustion Reaction.

Back

A reaction that involves the burning of a substance in the presence of oxygen, producing heat and light (e.g., Hydrocarbon + O₂ → CO₂ + H₂O).

Front

What is the Law of Conservation of Mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it remains constant.

Front

What is a Reactant?

Back

A substance that undergoes a chemical change in a reaction.