6. what is precipitation?\n7. what temperature does water boil at?\n8. what state is water in when it is ice?

Brief Explanations:

Precipitation is the process by which a solid forms from a solution during a chemical reaction or change in conditions. Water boils at 100°C at standard atmospheric pressure. When water is ice, it is in the solid - state.

Answer:

6. The process by which a solid forms from a solution.
7. 100°C
8. Solid - state