Baking soda and vinegar are mixed together in a sealed plastic bag. The chemicals bubble and the bag expands. Which conclusion can be made from these observations? There was a chemical change, and a precipitate was formed.

B.
There was a chemical change, and a gas was produced.

C.
There was a physical change, and a precipitate was formed.

D.

What is the equilibrium constant of aa+bb=cc+dd

Is a chemical message sent by another individual.

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?