Learn the basics about electrolysis. Electrolysis is electrical current flow through a liquid which causes chemical changes. The liquid can be a molten ionic compound or aqueous solution. The liquid will contain free-flowing positive ions and negative ions. The positive ions are called cations, and the negative ions are called anions. Electrodes are submerged in the liquid (electrolyte solution) and connected to an electrical cell. The electrons will start to flow in the wires and this will cause one electrode to become positively charged (the anode) and the other negatively charged (the cathode). This has an immediate knock-on effect in the molten liquid, and the ions in it. The positive ions in the liquid (electrolyte) are attracted to the negative electrode (cathode). The negative ions in the liquid (electrolyte), is going to be attracted to the positive electrode (anode). This is because opposite electrical charges attract. When the ions meet the electrodes, electron exchange happens and this triggers a chemical reaction. Remember that electrolysis can also take place in ionic solutions as well as molten compounds. The more concentrated the solution, the greater the ion flow rate. Ion flow rate can also be increased by increasing the potential difference or voltage across the cell. This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity Fuse Foundation - the organisation behind FuseSchool. These videos can be used in a flipped classroom model or as a revision aid. Click here to see more videos: https://alugha.com/FuseSchool Twitter: https://twitter.com/fuseSchool Friend us: http://www.facebook.com/fuseschool This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org
Learn about graphs. In this introductory video we will introduce coordinates, quadrants and the two axis: x-axis and y-axis. Click here to see more videos: https://alugha.com/FuseSchool VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders
Let’s discover some more circle theorems so that we can solve all types of geometrical puzzles. We discovered these 4 theorems in part 1: Angle at the centre is double the angle at the circumference The angle in a semi-circle is 90 degrees Angles in the same segment are equal / Angles subtended by
Click here to see more videos: https://alugha.com/FuseSchool If we don't have the vertical height of a triangle, then we can find the area of the triangle using 1/2absinC. In this video we are going to discover where this formula comes from. The formula is based on area = 1/2 base X height and a
