98% of this matter (ignoring the dark matter) is pure Hydrogen and Helium, but thankfully billions of years ago supergiant stars fused the hydrogen and helium into all the other elements and then exploded them all over the Universe and that’s where chemistry came from.

These elements grouped together into a vast array of different molecules, and these molecules

combined with each other in a stupendous number of complicated ways.

Chemistry is the subject that studies this matter in all of its forms and how it all interacts.

It goes from simple atoms right through to complex biological molecules like proteins and DNA.

It is a huge, fascinating and complex subject, and this video is all of that condensed.

Humans have had an interest in Chemistry for a very long time, we wouldn’t be what we are today if it was not for the chemical reaction of fire.

We used this to develop other chemical techniques from cooking food, making metal from ores or making glass amongst many others.

Since then many advances of human civilisation have been built on the back of advances in chemistry like metal working, or manufacturing fertiliser or making new materials and drugs.