20. Atoms and Photoelectric Effect

Which scientist proposed a new model of the atom after the discovery of the electron in 1897? His model consisted of electrons embedded in a sea of positive charge like seeds in a watermelon.

This model added on to previous models by showing electrons existed at certain "energy levels". However is does not accurately show what those levels look like.

During Rutherford's thin foil experiment, it was seen that a______of alpha particles passed through the thin foil because the atom__________.

True or False:

According to quantum mechanics, we can't exactly tell where an electron is located, we can only predict where it's usually found the most

According to today's model, how are electrons arranged?

A particle of light is called a...

What is the best description of 'threshold frequency'?

The only way to increase the number of photoelectrons emitted is by increasing the _________ of the light

Photoelectric effect provides the evidence for the ______ nature of radiation.