Substances have both physical and chemical properties. Developing the periodic table The periodic table was developed by grouping elements with similar properties. This, together with a later ...

The ACS is making educational resources available by topic to aid parents and teachers during this time of distance learning. The Periodic Table is an amazing chemistry tool that is organized with ...

They include lithium, sodium and potassium, and are placed in the first vertical column on the left of the periodic table. All the Group 1 elements are very reactive, and all react with water to ...