PLEASE HELP, DUE AT 12:00

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

The identities of substances are the same before and after which type of change

Which states of matter have particles that move independently of one another with very little attraction?