Two students mix vinegar and baking soda. They observe bubble forming, the baking soda dissolving, and the vinegar turning cloudy. They infer that chemical change has occurred. Which data support this inference 1. Baking soda dissolved
2. The vinegar turned cloudy
3. Light was given off
4. Bubbles formed

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

Avariable that is not being directly tested during an experiment should be

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.