ATOMIC STRUCTURE AND THE PERIODIC TABLE 0.0 / 5 ? ChemistryThe Periodic TableGCSEAQA Created by: Abbiemerritt8Created on: 28-10-23 13:13 what is an atom? the smallest part of an element that can exist 1 of 25 what does a chemical symbol consist of? -one or two letters -always starts with a capital letter 2 of 25 where are the metals on the periodic table? the left 3 of 25 where are the non metals on the periodic table? the right 4 of 25 what is a compound? a substance that contains two or more elements, that is chemically combined 5 of 25 what is an element? a substance made of one atom only 6 of 25 what is the definition of a chemical reaction? a change in which atoms are rearranged to join each other differently to form new substances. often involve energy changes 7 of 25 what is an ion? a charged particle formed when an atom or a group of atoms loses or gains electrons 8 of 25 what is a word equation? represents a chemical reaction using the names of the substances involved 9 of 25 what is a reactant? substances that react together in a chemical reaction 10 of 25 what is the product? the substance formed in a chemical reaction 11 of 25 how are word equations structured reactants -> products 12 of 25 what are state symbols? symbols to show if the substance is a liquid, solid, gas or an aqueous solution 13 of 25 what is a pure substance? consists of one element or compound 14 of 25 what is a mixture consists of two or more different substances not chemically joined together 15 of 25 why is filtration used? to separate an insoluble solid from a liquid 16 of 25 why is crystallisation used? used to produce solid crystals from a solution 17 of 25 why is paper chromatography used? to separate mixtures of soluble substances 18 of 25 when did john dalton publish his theory about atoms? 1803 19 of 25 what did jj Thompson discover? the electron, which led to the plum pudding model 20 of 25 what did ernest rutherford do? designed an experiment to test the plum pudding model. he fired positively charged alpha particles at thin gold foil 21 of 25 what did neils bohr do? adapted ernest rutherfords nuclear model. he discovered protons 22 of 25 who discovered neutrons? James Chadwick in 1932 23 of 25 what is the structure of the atom? a nucleus surrounded by electrons 24 of 25 what is an isotope? atoms of an element with the same number of protons and electrons, but different number of neutrons 25 of 25
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