AQA GCSE Atomic Structure
Practice Questions
1. State the names of the three subatomic particles present in and atom.
Protons, Neutrons and Electrons
2. The radius of a typical atom is 1 x 10-10m. Calculate the size of the radius of the nucleus.
The nucleus is 1/10000th the size of the atom.
1 x 10-10/10000 = 1 x 10-14m
3. Calculate the relative mass of the nucleus that is seen in the picture of the atom at the very top of this page.
There are 3 protons and 4 neutrons. Both protons and neutrons have a relative mass of 1. So, therefore total relative mass is 7.
4.State how many electrons as a maximum should be in the first, second and third energy levels of an atom.
First energy level holds up to two electrons, second or third energy level holds up to 8 electrons
Absorption and Emission of EM Radiation
JJ Thomson and Plum pudding model
Ernest Rutherford and the Nuclear Model
Niels Bohr changing the Nuclear Model
Discovering the Proton and Neutron
Measuring radiation from radioactivity
Radiation types and properties
Random nature of radioactive decay
Radioactive contamination or irradiation
Hazards of contamination and irradiation
Studies on the effects of radiation on humans
Different half lives of radioactive isotopes
Nuclear Fission Chain Reaction
Writing nuclear fission equations