Matter is made up of very small parts called atoms. Atoms can combine in different numbers and in different ways to make different molecules. Atoms and molecules make up all of the different ...

So now an atom is the smallest particle of an element. There are over one hundred different elements and these are all made of atoms. Presenter: OK. Well, before we get into this further ...

So now an atom is the smallest particle of an element. There are over one hundred different elements and these are all made of atoms. Presenter: OK. Well, before we get into this further ...

The amount of a substance that dissolves in a certain amount of water is a characteristic property of that substance. The different atoms and molecules of a substance give it its characteristic ...

It highlights that everything in the world is made up of atoms, which combine to form molecules. There are over 100 different types of atoms, and materials can be classified into elements ...

What makes matter stable? Why are atoms as they are? Why do different materials vary in their properties, such as electrical conductivity, density, melting temperature or light-absorption spectra?