Below is a list of some of the gcse revision videos that are available on this website. Remember to check back as I will be adding more videos regularly.
Atomic structure, electron arrangements and isotopes
This video explains the key points in John Dalton's atomic theory and also covers J.J Thomson's experiments with cathode rays and his Plum Pudding model of the atom.
This video describes Rutherford's gold foil experiment and how it replaced Thomson's plum pudding model. The video also introduces the work of Niels Bohr and how it improved upon Rutherford's model of the atom.
Introduction to the internal structure of the atom. Find out about the properties of protons, neutrons
and electrons. Introduction to the nuclear atom and electron shells.
This video gives a quick recap on the internal structure of atoms before explaining how to work out the electron arrangements in atoms. Finally the video explains how the position of an element in the periodic table is related to its electron arrangement.
This video explains how atoms form ions, in particular it explains why metal form positively charged metal cations and non-metals form negatively charged anions. It also relates the charges formed on ions to their position in the periodic table.
This video explains what isotopes are by using examples of common isotopes. It also explains how to calculate the relative atomic mass of an element which has many isotopes.
This video explains with examples the differences between simple and fractional distaillation. It explains in detail how simple and fractional distillation work.
This video explains to set-up a paper chromatography experiment and it also explains in detail how paper chromatography works. The video also introduces Rf values and explains with examples how to calculate Rf values.
This video explains how the periodic table was developed and in particular how the ideas and theories of the scientists: John Dalton, Johann Wolfgang Dobereiner, John Newlands and Dimitri Mendeleev played a crucial role in the development of the periodic table of elements.
This video introduces halogen displacement reactions; it goes through how to carry out a halogen displacement reaction and discusses the colour changes involved. Equations for halogen displacement reactions are also covered.
This video is the second part of a video on transition metals. This video covers the use of transition metals as catalysts and also introduces the idea of variable valencies.
This video discusses the extraction of metals from their ores by heating with carbon and hydrogen gas as well as biological methods used to extract metals from their ores, including bioleaching and phtyomining or phytoextraction.
This video discusses the common uses and properties of aluminium metal. It also explains in detail how aluminium is extracted from its ore bauxite using electrolysis.
Energy changes- Exothermic, endothermic reactions, fuel cells and batteries.
This video explains the differences between cells and batteries, how to set-up a simple cell and the difference between alkaline cells and rechargeable cells and batteries.
This video gives an introduction to the addition reactions of alkenes. Equations are given for addition of hydrogen, chlorine and bromine
to unsaturated molecules. Equations for addition of steam to C=C to make alcohols and the bromine test for unsaturation also discussed and explained with examples.
This video covers the cracking of large chain hydrocarbons to form smaller more useful hydrocarbon molecules. Catalytic and steam cracking are explained with practical examples of both given. An explanation of how to write equations for cracking reactions is given along with how to use bromine water to test for the presence of any unsaturation in a molecule.
This video covers the reactions of alcohols. Equations are given for the combustion of alcohols. The solubility of alcohols is
discussed with examples. Reactions of sodium metal with alcohols is covered, equations are given for these reactions and the trends in these reactions are explained. Finally the
oxidation of alcohols to carboxylic acids is discussed with examples.
This video gives an introduction to the properties and reactions of carboxylic acids. Reactions of carboxylic acids with metal
carbonates are covered with equations.
Explanation of how the addition polymer polythene is made.This video is aimed at gcse triple science (chemistry students) and it gives a brief introduction to the history and uses of polymers or plastics. The video explains how addition polymers are formed from small unsaturated alkene monomers.
This video starts by reviewing the structure of common carboxylic acids and alcohols then introduces dicarboxylic acids and diols. Examples are shown of how diacarboxylic acids and diols can form polyesters.
This video will explain what alloys are and how they are formed. It will look at the advantages alloys have over metals. The video will also cover the uses and properties of brass and bronze as well as the alloys of aluminium, gold and iron. The uses of different types of steels are explained, including low and high carbon steels as well as alloy steels such as stainless steel.
This video discusses the importance of the Haber-Bosch process for making ammonia. It discusses the reaction conditions and the use of ammonia in making fertilisers.
