Classifying Chemical Reactions Version Q

Front

What is the general formula for a decomposition reaction?

Back

AB → A + B

Front

What does the symbol (aq) represent in a chemical equation?

Back

(aq) indicates a substance is dissolved in aqueous solution.

Front

What class of reaction is represented by the equation: Zn + H2S → ZnS + H2?

Back

Single replacement reaction.

Front

What class of reaction is represented by the equation: 2HgClO3 → 2HgO + Cl2?

Back

Decomposition reaction.

Front

How can the rate of a reaction be increased?

Back

Increasing the surface area of reactants, such as crushing chalk.

Front

What is a synthesis reaction?

Back

A reaction where two or more substances combine to form a single product (A + B → AB).

Front

What is a combustion reaction?

Back

A reaction that involves the burning of a substance in the presence of oxygen, producing heat and light.

Front

What is a double replacement reaction?

Back

A reaction where two compounds exchange ions to form two new compounds (AB + CD → AC + BD).

Front

What is the difference between a single replacement and a double replacement reaction?

Back

In single replacement, one element replaces another in a compound; in double replacement, two compounds exchange partners.

Front

What does the symbol (s) indicate in a chemical equation?

Back

(s) indicates a substance is in solid state.