unit+2+assessments

Hot and cold

​ 1.Hot gasses rise. 2.Cold gasses sink. 3.Cold gasses have molecules that are close together. 4.Hot gasses have large spaces between the molecules. 5. Hot gasses hold water well. 6.C​old gasses do not hold water well. 7. Cold gasses have less energy. 8.Hot gasses have lots of energy.