There are currently 118 known elements on the periodic table, and we've put 20 of them below to create a brain game that ...

The periodic table The periodic table is a chart ... The three common Group 7 elements are chlorine, bromine and iodine. The word ‘halogen’ means 'salt former'. Group 0 and testing ions ...

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

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

Click on the images below to automatically tweet the element infographics. Download the PDFs to make your own wall displays or education resources. We've also created a range of IYPT-themed, ...