Uploaded November 2023 | Updated September 2026, 12 hours ago
Find your 9s with PLUS. Click the link to try for free freesciencelessons.co.uk/modules/gcse-chemistry-1-triple
Teachers, to get PLUS for your school, email schools@freesciencelessons.co.uk
In this video we look at the Nuclear Model of atomic structure. We see that atoms consist mainly of empty space, with a central positive nucleus containing most of the mass of the atom and electrons around the edge. We look at how the scientist Niels Bohr contributed to the nuclear model with his idea of electron orbits (which we now call electron energy levels or shells). We then see how the nuclear model was further developed with the discovery of the proton and how the number of protons determines the amount of positive charge in the nucleus. Next, we look at how the discovery of the neutron by James Chadwick completed the nuclear model. We finish by looking at the radius of an atom and the radius of the nucleus and the relative charges and relative masses of protons, neutrons and electrons.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Chemistry. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Find your 9s with PLUS. Click the link to try for free freesciencelessons.co.uk/modules/gcse-chemistry-1-triple
Teachers, to get PLUS for your school, email schools@freesciencelessons.co.uk
In this video we look at the Nuclear Model of atomic structure. We see that atoms consist mainly of empty space, with a central positive nucleus containing most of the mass of the atom and electrons around the edge. We look at how the scientist Niels Bohr contributed to the nuclear model with his idea of electron orbits (which we now call electron energy levels or shells). We then see how the nuclear model was further developed with the discovery of the proton and how the number of protons determines the amount of positive charge in the nucleus. Next, we look at how the discovery of the neutron by James Chadwick completed the nuclear model. We finish by looking at the radius of an atom and the radius of the nucleus and the relative charges and relative masses of protons, neutrons and electrons.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Chemistry. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
