7.2 Reactions Practice

Front

What type of reaction involves the breaking down of a substance into simpler substances?

Back

Decomposition reaction.

Front

What type of reaction involves substances combining to form a new compound?

Back

Synthesis reaction.

Front

What do the coefficients in a chemical equation represent?

Back

The number of moles of each substance involved in the reaction.

Front

What do the subscripts in a chemical formula indicate?

Back

The number of atoms of each element in a molecule.

Front

What is a single replacement reaction?

Back

A reaction where one element replaces another in a compound.

Front

What is a double replacement reaction?

Back

A reaction where two compounds exchange ions to form two new compounds.

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

Identify the type of reaction: Pb(NO3)2 -> PbO + NO2 + O2

Back

Decomposition reaction.

Front

Identify the type of reaction: Ca + MgCl2 -> CaCl2 + Mg

Back

Single replacement reaction.

Front

What is the general form of a synthesis reaction?

Back

A + B -> AB, where A and B are reactants that combine to form a product AB.