THE ATOMIC STRUCTURE
Proton + 1
Neutron 0 1
Electron - 1/2000
Atoms are neutral
-atoms of the same element with a different mass
For every 4 atoms of chlorine, 1 is heavier.
What makes atoms reactive?
-They want to obtain a full outer shell.
<---Shared Pair of electrons from each Hydrogen atom.
H-H or H2
<--Sharing of electrons between two Hydrogen molecules and one oxygen, to make water.
H-O-H or H20
<--- Sharing of electrons between 4 hydrogen atoms, and one carbon atom, creating methane.
CH4 or H
H - C - H
<--- In Oxygen a double bond is used (the sharing of two pairs of electrons)
O2 or O=O
GROUP 1 METALS - ALKALI
Li - Lithium
Na - Sodium
K - Potassium
Rb - Rubidium
Cs - Caesium
They increases in size (mass) as you go down the group.
Eg. Caesium has a bigger mass than lithium.
As they increase in…