a student is watching a simulation of a rocket's flight. she notices that the rocket is dropping devices in flight. what are these "devices" most likely to be?
a. trajectories
b. satellites
c. used up rocket stages
d. exhaust from the combustion reactions

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?