Chemical Reactions

a chemical reaction is a process in which one set of substances called ___ is converted to a new set of substances.

a process that results in the formation of a substance or substances with properties that are different from those of starting materials

what change is going on if a substance changes color?

what change is going on if there formation of a solid (precipitate) within a clear liquid?

what change is going on if there is evolution of gas?

what change is going on if there is evolution or absorption of heat

an arrow pointing to the right in a chemical equation means?

an arrow with two opposite heads in a chemical equation means the reaction is __

(g) subscript in a reactant or product means it is in a __ state

an arrow pointing upward means an evolution of a __ product