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Atomic Structure - Coggle Diagram
Atomic Structure
Keywords
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Nucleus Centre of atom, contains protons and neutrons
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Neutron Neutral particle, no charge
Radioactive keywords
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Radioactive decay RANDOM process of radiation being released by a nucelus, different element formed
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History of the atom
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Discovery 2
The electron by J.J Thompson - Plum pudding, positive 'cake' and negative 'plums' (+and - in atom)
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Discovery 3 pt2
Neutron by James Chadwick - Nuclear: Now with protons and neutrons in nucleus (- and nucleus in atom)
Nuclear Fission
- Slow neutron hits nucleus
- Nucleus becomes unstable and splits in 1/2
- 3 neutrons and gamma rays are released
- Neutrons hit other nuclei, chain reaction
- If uncontrolled, will cause explosion
Properties of sub-atomic
Neutron
1 relative mass, 0 charge, nucleus
Proton
1 relative mass, +1 charge, nucleus
Electron
0 relative mass, -1 charge, shells
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