Alkali metals in water – Chemical elements: properties and reactions (1/8)

There are six alkali metals: Lithium, sodium, potassium, rubidium, cesium and francium. They are all soft metals which can be cut with a knife. In air the elements quickly become coated with compounds that form on the metal’s surface. Here, for example, is lithium. When we slice it, you can see the metallic lustre but […]

Electricity and Fire in Lemon Battery EXPLAINED

The lemon experiment is one of the most well-known science experiment of all time. You’ve seen videos of it and maybe even try it yourself the experiment usually shows a lemon at the battery which is amazing enough, but it can even be used to create fire! Does that mean fire and electricity are secretly […]