Melting involves … * B. a gas going directly to a solid, like frost on windows
C. a solid becoming a liquid, like molten iron
D. a liquid becoming a gas, like gasoline in air

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?