Element Chemical Symbol Melting Point Boiling Point Colour
Fluorine F -220 -188 Yellow
Chlorine Cl -101 -34 Lime
Bromine Br -7 59 Brown
Iodine I 114 184 Purple
These elements are all halogens. Things that they all have in common are that they are all coloured and they are all poisonous. Passing down the group the state of the elements at room temperature go from gases -> liquids -> solids
Metals and Non-Metals
Five (5) differences to help you decide if something is a metal or non-metal are that:-
Metals can be shiny, is it shiny?
Metals can be hard, is it hard?
Metals can be strong, is it strong?
Metals can be malleable (bendable) is it malleable?
Metals can be heavy, is it heavy?
Elements and Atoms
What is an element?
An element is a substance made up of one (1) type of atom. For example oxygen is made up of only 1 atom.
What is a compound?
A compound is a substance made up of more than 1 type of atom. For example Magnesium Oxide is made of magnesium and oxygen. Remember that a compound is NOT A MIXTURE!
On the periodic table a column is called a group, and a row is called a period.