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Transcript
Elements Aluminium (Al) https://www.youtube.com/watch?v=kzAN5f0m5H4 What is an Element? ❖ It is a pure substance that cannot be separated into simpler substances by physical or chemical means. Characteristics of an element? Substance composed of a single kind of atom. Cannot be broken down by physical or chemical. Can be composed of individual atoms or of molecules. Only one type of Particle Elements are Pure Substances. A Pure Substance is a substance in which there is only one type of particle. Elements contain only one type of particle: ATOMS. Meteorite…. Travels more than 400 million Km to reach Earth Meterorite https://www.youtube.com/watch?v=dBvotWfR3j4 Work with your Coursebook Go to the pg. 80 and solve the questions 1&2 Atoms joining together Some substances are made up of individual atoms. Other substances are made up of little groups of atoms. Molecules are particles made of two or more atoms .joined together. Elements on Earth Solve the Worksheet Worksheet 7.5A Compounds and formulae
