This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

Classify this reaction: 2al+n2-> aln.

Air can be considered a mixture. which statement does not explain why?

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?