1. The periodic table is an essential tool for all chemists
The periodic table is an essential tool for all chemists. It is full of useful information. He 2
4.0
ATOMIC NUMBER
SYMBOL
NAME
helium
RELATIVE ATOMIC MASS

2. He 2 4
MASS NUMBER
SYMBOL
ATOMIC NUMBER

3. There are 3 sub atomic particles2 4
ATOMIC NUMBER
SYMBOL
MASS NUMBER

4. He 2 4 B 5 11 O 8 16 Na 11 23 Cl 17 35
DEMO – LOVE HEARTS (Protons), PARMA VIOLETS (Neutrons) and SKITTLES (electrons)

5. There are 3 sub atomic particles
Protons
The number is found on the periodic table
They have a charge
Neutrons
The number is calculated from the numbers on the periodic table
They are found in the same location as another particle He 2 4
ATOMIC NUMBER
SYMBOL
MASS NUMBER
Electrons
They are always equal in number to another type of particle
They have no fixed location