1. A double replacement reaction can be best described as a reaction in which (1 point) A.) a substitution takes place.

B.) two atoms of a compound are lost.

C.) ions are exchanged between two compounds.

D.) electrons are exchanged between two atoms.

C.) ions are exchanged between two compounds.

Explanation:

In a double replacement reaction, ions are exchanged between two compounds.

This reaction type involves an actual exchange of partners to form new compounds.

For example:

                 AB + CD  →  AD  + CB

This reaction involves two ionic compounds exchanging partners.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error