The Alkali Metals I wanted to display all the key points about each group of elements, in a way that was both clear and engaging for the pupils – as a consequence, the information presented is relatively basic, so that it’s accessible for as many of the year groups as possible. I also tried to include some information regarding uses of the elements or compounds containing them, in order to make it relevant and pique the pupils’ interest.
Rubidium reacting with water. A small piece of rubidium (centre middle) entering a tank of water. Rubidium (Rb) is an highly-reactive alkali metal element that reacts with water to produce the strong base rubidium hydroxide, also releasing hydrogen gas (see subsequent images in this sequence.) This image is a still taken from a high speed film shot at 2000 frames per second. Credit: Science Photo Library