Radioactivity
- Created by: yzannepepper
- Created on: 11-04-18 12:01
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- Radioactivity
- Atoms and Radiation
- Geiger counters are used to detect radioactivity
- Rutherford
- Gold foil experiment
- Alpha Radiation is stopped by paper
- This means that every atom has a positively charged nucleus at the center which contains most of the mass of the atom.
- He proved, using the gold foil experiment, that some some alpha particles that where being directed towards foil rebounded.
- This means that every atom has a positively charged nucleus at the center which contains most of the mass of the atom.
- Beta Radiation goes through paper
- Gamma radiation was later discovered and was even stronger than Beta
- Alpha Radiation is stopped by paper
- He proved, using the gold foil experiment, that some some alpha particles that where being directed towards foil rebounded.
- An unstable nucleus is when it decays whilst emitting radiation.
- Video clip :
- The discovery of the nucleus
- plum pudding model
- before this, they didn't know that atoms contain negatively charged particles called electrons.
- this theory was that there were positively charged matter spread about with electrons buried inside.
- Bohr's model of the atom
- the theory that electrons in the atom orbit the nucleus at specific distances & specific energy levels.
- Rutherford's theory
- he deduced that there is a positively charged nucleus at the center of every atom that is:
- smaller than the atom
- where most of the mass is located
- he deduced that there is a positively charged nucleus at the center of every atom that is:
- plum pudding model
- Changes in the nucleus
- Alpha, Beta, Gamma radiation
- Activity and half - life
- Nuclear fission
- Nuclear Fusion
- Nuclear issues
- Atoms and Radiation
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