Atom
Contents
Key Stage 3
Meaning
An atom is a very small particle made of protons, neutrons and electrons that can join with other atoms to make molecules.
About Atoms in The Dalton Model
- In The Dalton Model atoms are shown as ball shaped particles. This makes it easier to draw diagrams of molecules.
A picture of The Dalton Model of an atom. |
About Atoms beyond The Dalton Model
- Atoms are made of three smaller particles; the proton, neutron and electron.
- Protons and neutrons are found in the nucleus at the centre of an atom. Electrons are found orbiting the nucleus in 'shells'.
A diagram of an atom. |