Chemistry Unit 1 Topic 3 Edexcel:Formula,Equations and Amounts of Substance 3.0 / 5 based on 1 rating ? ChemistryCalculationsASEdexcel Created by: liliane eleidCreated on: 22-09-12 16:55 atom smallest part of an element that can exist+cannot be split to anything simpler. 1 of 10 element a substance made up of one type of atom+cannot be broken down chemically into simpler substances 2 of 10 compound a substance containing two or more different elements joined chemically 3 of 10 ion an atom with an electrical charge,this happens when they lose or gain electrons 4 of 10 molecule a small group of atoms bonded together by covalent bonds 5 of 10 empirical formula the simplest whole number ratio of the atoms of each element in the substance e.g. m.f=C2H6 e.f.=CH3 6 of 10 molecular formula the number of atoms of each element in one molecule of the substance 7 of 10 molecular equation shows the complete of each substance 8 of 10 ionic equation only concerned with chemical species involved in the bonding process 9 of 10 species any type of particle that takes place in a chemical reaction 10 of 10
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