Chemistry- Definitions 0.0 / 5 ? ChemistryDefinitionsGCSEEdexcel Created by: darceywhittingham02Created on: 06-04-18 13:39 Hydrocarbons Molecules that are made up of carbon and hydrogen atoms only. 1 of 19 Homologous Series A series of organic compounds that have similar chemical properties, a gradual change in physical properties and they have the same general formula. 2 of 19 Isomers Same molecular formula, different displayed formula. This can cause different physical properties. 3 of 19 Crude oil A mixture of hydrocarbons. 4 of 19 Saturated All carbon to carbon bonds are single. 5 of 19 Fractions Produced when crude oil is separated by fractional distillation. 6 of 19 Cracking The process of taking a large hydrocarbon and breaking down into a smaller, more useful alkane and alkene. 7 of 19 Polymer A long chain formed when small monomers join together. 8 of 19 Solvent The liquid in which a solute dissolves. 9 of 19 Solute The substance that dissolves in a liquid to form a solution. 10 of 19 Solution The mixture formed when a solute has dissolved in a solvent. 11 of 19 Soluble Describe a substance that will dissolve. 12 of 19 Insoluble Describes a substance that will not dissolve. 13 of 19 Electrolysis The chemical decomposition produced by passing an electric current through an ionic substance that is molten or in a solution. 14 of 19 Isotope Different atomic forms of the same element, which have the same number of protons but a different number of neutrons. 15 of 19 Dynamic equilibrium The forwards and reverse reaction are occurring at the same rate simultaneously maintaining a constant concentration. 16 of 19 Closed system Reactants and products cannot leave. 17 of 19 Mass number Total number of protons and neutrons. 18 of 19 Atomic number Number of protons. 19 of 19
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