Atoms and elementsPrint
All the different elements are arranged in a chart called the periodic table.
The horizontal rows are called periods.
The vertical columns are called groups.
Elements in the same group are similar to each other.
The metals are on the left and the non-metals are on the right.
One non-metal, hydrogen, is often put in the middle.
The main groups are numbered from 1 to 7 going from left to right, and the last group on the right is group 0.
The zig-zag line in this diagram separates the metals, on the left, from non-metals, on the right. Hydrogen is a non-metal but it is often put in the middle.
Notice that most elements are metals, rather than non-metals.
Each element has its own chemical symbol, made from letters. Remember that you will only find elements in the periodic table and never compounds. So don't try to look for substances like water and copper sulphate in the periodic table, because they are not there.
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