Areaction which forms a solid product is an example of a(n): gas evolution reaction. combustion reaction. precipitation reaction. oxidation-reduction reaction. none of the above

A reaction in which a solid product is formed is termed a PRECIPITATION REACTION.
The solid literally "precipitates" out of the liquid, meaning it comes out if the solution into a solid.

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.