Learn the basics about the exchange of oxygen in oxidation-reduction reactions (REDOX) when learning about chemical reactions. In a chemical reaction, oxidation is oxygen GAIN and reduction is oxygen LOSS. A good example of oxidation is a combustion reaction. Hydrogen is a clean fuel that works by combination reaction with oxygen. Energy is released as bonds are formed, and this energy can be used to power cars or appliances. Oxygen also combines with metals. When oxygen reacts with iron, the iron is readily oxidised. This is why iron rusts. Haemoglobin in blood carries oxygen around the body by oxygen exchange reactions. The iron in the blood oxidises. Reduction is oxygen loss. Some oxides, when heated, release oxygen and are reduced. It is very important that we are able to make metal oxides lose oxygen, as pure metals that result from this process have unique properties that are useful for industry. For example, in a blast furnace. Coke is used to reduce iron ore (iron oxide) to iron metal. Simultaneous oxidation and reduction can take place in reactions, as happens in the blast furnace. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. JOIN our platform at www.fuseschool.org This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity Fuse Foundation - the organisation behind The Fuse School. These videos can be used in a flipped classroom model or as a revision aid. Twitter: https://twitter.com/fuseSchool Access a deeper Learning Experience in the Fuse School platform and app: www.fuseschool.org 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 Transcript: alugha Click here to see more videos: https://alugha.com/FuseSchool
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
Click here to see more videos: https://alugha.com/FuseSchool Learn the basics about the principles of green chemistry as a part of the environmental chemistry topic. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. This
