What forms when 2 atoms combine? a molecule

a nucleus

a proton

an isotope

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Which of the following is not a characteristic of s waves?

Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.