But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...

While you're watching, look out for where different elements are found in the periodic table. Mrs Roberts: So, here I have an empty pop can. This is made of aluminium. Aluminium is an element.

This puzzle shows many of the elements used to make transistors. The finished puzzle is a section of the periodic table, so the numbers ... and the empty square. Then move tiles around in that ...

Scientists have found that our bodies need 28 different elements to function properly. These are almost one-quarter of the periodic table and are mainly found in the first four periods.