In a negative ion, the number of protons is the number of electrons. b. more than c. equal to
d. no correct answer
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Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false