Question # R1 Do you think this provides proof that atoms exist, or is it more evidence that supports the idea?
Explain. Could our understanding of atoms still change and develop?

This is the number of complete movements of a wave per second.

Debris produced by mining is called

Because atoms of elements in the same group of thbecause atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t fe periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t f