Which is one way that dalton's atomic theory has been shown to be incorrect?
some atoms of a particular element are identical to atoms of other elements.
atoms can be destroyed by chemical reactions.
atoms can change identity in chemical reactions.
atoms can be split into subatomic particles.

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

What type of electromagnetic radiation has a shorter wavelength than blue light