. Explain with examples following characteristics of chemical reactions:   a. Change of colour  b. Evolution of gas  c. Change of smell  d. Change of state

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Does the temperature affect the solubility of sugar and salt in water? if it does tell me like different temperatures with different solubilities so i can sketch down a graph

What would happen to a volleyball left outside in the winter? o o o o a. it would expand. b. it would lose air. c. it would shrink. d. it would explode.