Atoms
Atoms
- Created by: revise
- Created on: 30-04-13 10:20
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- Atoms
- The nucleus
- in the middle of an atom
- it contains protons and neutrons
- it has an overall positive charge because protons are positively chargeed and neutrons have no charge
- Electrons
- they occupy shells (energy levels) around the nucleus
- The nucleus
- tiny comapred to the whole atom
- The nucleus
- in the middle of an atom
- it contains protons and neutrons
- it has an overall positive charge because protons are positively chargeed and neutrons have no charge
- The nucleus
- move around the nucleus
- Electrons
- they occupy shells (energy levels) around the nucleus
- Electrons
- negatively charged
- always equal the number of protons
- protons - heavy & positively charged
- neutrons - heavy & neutral
- Atoms
- Atoms
- neutrons - heavy & neutral
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