Chemistry paper 1 keywords and equations 5.0 / 5 based on 3 ratings ? ChemistryChemistry paper 1GCSEAQA Created by: GMay10Created on: 13-05-18 16:10 Atoms All substances are made up of this 1 of 31 Element A substance that contains only one sort of atom 2 of 31 Compund Contains atoms of two or more elements, which are chemically combined in fixed proportions 3 of 31 Reactants The substances that react and are on the left side of an equation 4 of 31 Products The new substances that are formed and are on the right side of the equation 5 of 31 Mixtures Two or more elements or compounds, that are not chemically combined 6 of 31 Filteration Used to separate soluble solids from insoluble solids 7 of 31 Crystalisation Used to obtain a soluble solid from a solution 8 of 31 Simple distillation Used to obtain a solvent from a solution 9 of 31 Fractional distilation Used to separate mixtures in which the components have different boiling points. 10 of 31 Chromatography Used to separate the different soluble, coloured components of a mixture. 11 of 31 Number of neutrons Mass number - atomic number 12 of 31 Electronic configuration Shows how the electrons are arranged around the nucleus in shells 13 of 31 Dimitri Mendeleev He realised that some elements had yet to be discovered 14 of 31 Noble gases The elements in group 0 15 of 31 Alkali metals The elements in group 1 16 of 31 Halogens Group 7 elements and are non-metals 17 of 31 Matter Everything is made up of this 18 of 31 Melting point Melt and freeze at a specific temperature 19 of 31 Boiling point Boil and condense at a specific temperature 20 of 31 Aqueous Dissolved in water 21 of 31 Ionic bonding A transfer of electrons from metal atoms to non-metal atoms 22 of 31 Covalent bonding A shared pair of electrons between atoms 23 of 31 Intermolecular forces Forces of attraction between the molecules 24 of 31 Diamond, graphite and grapheen Forms of carbon 25 of 31 Fullerenes Molecules that contain different cumbers of carbon atoms 26 of 31 Delocalised Not bound to one atom 27 of 31 Metallic bond The attraction between the positive ions and delocalised negatively charged electrons. 28 of 31 Alloys Mixtures that contain a metal and at least one other element 29 of 31 Conservation of mass The total mass of the products is equal to the total mass of the reactants in a chemical reaction 30 of 31 Relative formula mass of a compund The sum of the relative atomic masses of all the atoms in the numbers shown in the formula 31 of 31
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