what is the radius of an atom?
1x10 to the power of (-10) meters
what’s in an atoms nucleus?
protons (+) and neutrons (neutral)
what is the nucleus surrounded by?
electrons (-) in shells/ energy levels
what are energy levels that are further from the nucleus?
they’re at a higher energy than those closer to the nucleus
what happens when an atom absorbs electromagnetic radiation?
an electron can move from a lower energy level to a higher energy level
what happens to the atom?
it can emit electromagnetic radiation and the electron returns back to the lower energy level