Topic 5 Flashcards
1
Q
Atomic Number
A
This number is the number of protons an element has.
2
Q
Atomic mass-
A
The average mass of an element
3
Q
Groups or Chemical families
A
These are the vertical rows withing the periodic table.
4
Q
Periods
A
Horizontal rows of elements with increasing atomic numbers from left to right.
5
Q
Atoms and the electrons in each electron shell
A
First shell - 2
Second shell-8
Third shell-8
Fourth shell- 32
