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Compounds, Mixtures 'n' Elements
1 Elements
1.1 Elements can't be split up into
anything simpler by chemical
ethods. They only contain one type
of atom.
1.2 There are about 100 different elements.
1.3 Each element has a name and a
shorthand symbol (e.g. Carbon = C).
1.4 Everything on Earth is made up of elements.
1.5 The Periodic Table lists all the elements
1.5.1 The number in the top right
corner of an element is the
Relative Atomic Mass.
1.5.2 The number in the bottom right
corner of and element is the
Atomic Number
1.5.3 On the left of the Periodic
Table are the Metals
1.5.4 In the middle of the Periodic
Table are the Transition
Metals
1.5.5 On the right of the Periodic
Table are the Non-Metals.
1.5.6 A group is a vertical column of elements
1.5.6.1 Examples
1.5.6.1.1 Group 1 = The Alkali Metals
1.5.6.1.2 Group 2 = The Alkaline Earth Metals
1.5.6.1.3 Group 7 = The Halogens (Halogen means
'Salt -former' and compounds with a halogen in
it is called a 'salt'.
1.5.6.1.4 Group 0 = The Noble Gases
2 Mixtures
2.1 Mixtures are substance NOT chemically joined up