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357995
Atoms and Radiation
Description
AS Level GCSE Stuff Mind Map on Atoms and Radiation, created by hollyweber on 14/11/2013.
No tags specified
p2: atoms and radiation
physics
gcse stuff
as level
Mind Map by
hollyweber
, updated more than 1 year ago
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Created by
hollyweber
almost 11 years ago
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Resource summary
Atoms and Radiation
Atomic Structure
Properties of sub-atomic particles
Proton
Relative Mass: 1
Relative charge: +1
Neutron
Relative Mass: 1
Relative charge: 0
Electron
Relative Mass: alomst 0
Relative charge: -1
Evidence for atomic structure
The 'plum pudding' model
In this model, the atom was imagined to be a sphere of positive charge with negatively charged electrons dotted around inside it
An experiment carried out in 1905 showed that the plum pudding model could not be correct.
Rutherford's scattering experiment
Isotopes
Nuclear Radiation
Background Radiation
All around us
Some from natural sources
Cosmic rays
Radiation that reaches earth from space
Rocks and soil
Some rocks are radioactive- giev off radon gas
Living things
Plants absorb radioactive materials from the soil and these pass up the food chain
Some from artical sources
Medical
x-rays
Nuclear power and weapons test
Radioactive waste
Radioactive fallout
Types of radiation
Alpha Radiation
Conists of alpha particles
Two protons and two neutrons (identical to helium)
No electrons
Beta Radiation
Consists of high energy electrons
Electrons which are made from a split neutrion
The electron then shoots out at a high speed
Gamma Radiation
Short wavelength
Electromagnetic radiation
Nuclear Fusion and Fisssion
Media attachments
4_atoms_elements.gif (image/gif)
add_aqa_phy_plum_pudding_model (image/jpg)
30_2_background_radiation_v2.gif (image/gif)
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