What is the Atomic Number?

What is the maximum amount of electrons that can go on the first energy level?

True of False:
You still draw on energy levels that have no electrons on

Electrons fill energy levels from:
Those closest to the nucleus out/Those furthest away from the nucleus in?

Relative Atomic Mass is?

The number of protons is the same as...

The fewer the subatomic particles..
A) The lighter the atom
B) The heavier the atom
C) It makes no difference

The second and third energy levels have a maximum of how many electrons?

The period (row) an element is on tells us...

The group (column) an element is on tells us...

Isotopes are...

Do isotopes react chemically in the same way? If so, why?

True or false:
Physical properties in isotopes do not change