Chemistry AQA AS Unit 1 Atomic Structure

Made these notes for my year 12 summer exam to revise and read over. There are spelling mistakes in most of my files but due to the busy exam schedule I had no time to correct them (sorry).

Most files have more information than what is needed but I feel it helps you feel more confident walking into the exam if you have a greater knowledge background and may help when having to apply knowledge to questions. Good luck :)

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  • Created by: Chelcie
  • Created on: 02-09-13 13:01

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Atomic Structure
NUCLEAR FORCE: The force which holds together neutrons and protons.
ELECTROSTATIC FORCE: The force that holds the electrons and protons together and overcomes
the repulsion of the protons (with another proton) in the nucleus.
NUCLEONS: Protons and neutrons.

Electron shells: 2, 8, 18


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CALCULATION: (Abundance (%) X mass number)
100(or the total %)

MOLECULAR IONS: An ion which has not broken up during being in the mass spectrometer.
ENERGY LEVELS: Electrons in different shells have differing amounts of energy. Sub levels of
s, p, d, f.
QUANTUM MECHANICS: The probability of finding an…


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