0
Q
Periodic table
A
The properties of an element is repeated in each period- or row- of the table
1
Q
Atomic mass
A
The average mass of all isotopes of an element
2
Q
Periods
A
The table is organized a horizontal rooms
3
Q
Groups
A
The elements of the modern periodic table fall into 18 vertical columns
4
Q
Chemical symbol
A
Just below the atomic number on the letters Fe- the chemical symbol for iron
5
Q
Plasma
A
A state of matter that consists of a gas like mixture of free electrons and the nuclei of atoms that have been stripped of electrons
6
Q
Nuclear fusion
A
A process in which to atomic nuclei combine forming a larger nucleus and releasing huge amounts of energy
