1.
What is the benefit of writing a net ionic equation instead of a formula equation?
A
The net ionic equation shows the spectator ions in the reaction.

B
The net ionic equation shows a balance of atomic mass of each molecule.

C
The net ionic equation shows only the substances that change in the reaction.

D
The net ionic equation shows only the product that is soluble.

2.
What symbol is used to identify a precipitate in a net ionic equation?
A
(aq)

B
(s)

C
(g)

D
(l)

3. Which chemical reactions are likely to have an element as one of its products?
A
synthesis and single-displacement

B
decomposition and single-displacement

C
double-displacement, combustion, and decomposition

D
combustion, single-displacement, and decomposition

1. The net ionic equation only shows the substances that are reacting. the net ionic equation removes the spectator ions. These are ions that do not really have a big part in the reaction.

2. A precipitate is a solid product that is formed as a result of reaction of two acqeous substances. This is symbolized by the symbol (s) for solid.

3. A decomposition reaction takes place when one compound is decomposed into two of its reactants. An example is hydrogen peroxide, which decomposes like this:

H₂O₂ (g) = H₂ (g) + O₂ (g)