Question

is this correct please answer fast
if it's correct I will mark as brainlist
and if wrong reported​

Answer 1

Answer:

1. Contact force.

2. Solid.

Both of them correct

Answer 2

Answer:

When two reactants in solution react and one or more of the products is insoluble or forms a precipitate, the reaction is called a precipitation reaction. For example, when a solution of iron chloride and ammonium hydroxide are mixed, a brown precipitate of iron hydroxide is formed.