When two solutions are combined, what evidence would show a chemical reaction has occurred? *
temperature remains constant
a precipitate forms
volume increases

A precipitate forms because when a chemical change occurs a new substance is formed.

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

Matter- occupies space and possesses rest massno matter is the opposite