Radioactiviy Mindmap
- Created by: Kenzie_Erica
- Created on: 23-02-19 16:19
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- Radioactivity
- Atomic Structure
- Dalton Model
- Tiny, indivisible spheres
- Plum Pudding Model
- A ball of positive charge with negative electrons
- Nuclear Model
- The mass of an atom is concentrated in it's nucleus. It is mainly empty space
- Bohr Model
- Electrons orbit the nucleus at specific distances
- Radius of Atom
- 1x10^-10m
- Radius of Nucleus
- 1/10000th of atom
- Dalton Model
- Isotopes and Ions
- Iosotope
- Different version of the same element. Same number of protons, different number of neutrons
- Ion
- An atom that has lost or gained an electron wither making it positive or negative
- Ionising Power
- Making an atom into and ion
- The ionising power and range in air are indirectly proportionate
- Iosotope
- Types of Radioactive Decay
- Alpha
- 2 protons and 2 neutrons. Loses 2 from proton number and 4 from mass number
- Beta
- A neutron changes to a proton and an electron, which is ejected. The mass number doesn't change but the proton number increases by 1
- Gamma
- Electromagnetic waves to lose extra energy after alpha or beta decay.
- Alpha
- Penetrating Power
- Alpha
- Stopped by thin paper
- Gamma
- Some passes through thick lead
- Alpha
- Range in Air
- Alpha
- A few centimetres
- Beta
- A few metres
- Gamma
- A very long way
- Alpha
- Half-life
- The time it takes for half of the radioactive atoms to decay
- Number of Emissions per Second
- Activity
- Counts per second (cps)
- Becquerels (Bq)
- Contamiation and Irradiation
- Contamination
- The unwanted presence of radioactive isotopes on other materials
- Danger of Contamination
- The decay of atoms releasing alpha, beta or gamma radiation
- Irradiation
- Takes place if an object is exposed to a source emitting radiation
- Danger of Irradiation
- Untitled
- Contamination
- Atomic Structure
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