Atoms

What is inside these building blocks that make up everything.

 

1. The A to Z of Isotopes

What's an isotope and what is nuclear notation? This videos explains how we represent different elements (and how we can use Lego to show this!)

 

2. Size, Mass and Density of the Nucleus

Find out a little more about the masses of the subatomic particles and the atomic mass unit, u. You can also estimate the size of the atomic nuclei and therefore calculate their massive density.

 

3. What holds the Nucleus Together?

Why do the positive protons stick together, and also why don't the electrons get attracted into the positive nucleus? It's all due to some special glu (ons).