Atoms and elements
- Created by: Rebecca Heywood
- Created on: 14-05-11 11:56
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atoms have a small nucleus surrounded by electrons
Elements consist of one type of atom only
Nucleus
the nucleas is the middle of the atom
it contains protons and neutrons
almost the whole mass of the atom is concentrated in the nucleas
its tiny compared to the atom as a whole
Electrons
move around the nucleus in shells
theyre tiny but their paths cover lots of space
electron shells explain the whole of chemistry
Atoms
different numbers of protons neutrons and electrons
its the number of…
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