Atomic Structure and Periodic Table 0.0 / 5 ? ScienceAtomsGCSEEdexcel Created by: happy.jolly.potatoCreated on: 31-03-19 17:24 What is an Atom? The smallest part of an element that can exist 1 of 12 What is an Element? A substance made of one type of atom 2 of 12 What is a compound? A substance made from 2 or more different atoms chemically bonded together. 3 of 12 how are compounds formed? from chemical reactions 4 of 12 What is involved in a chemical reaction The formation of one or more new substances and an energy change 5 of 12 What is a molecule? a substance made form one or more atom chemically bonded together 6 of 12 What is a mixture? A substance made from one or more things that arnt chemically bonded 7 of 12 How can mixtures be separated? Physical process: filtration. crystallisation, distillation and chromatography 8 of 12 Name 3 sub-atomic particles Proton, Neutron, Electron 9 of 12 What are the relevant masses and charges of the 3 subatomic particles? Proton: +1 and 1 Neutron: 0 and 1 Electron:-1 and negligible 10 of 12 What is the plum pudding model of the atom? A ball of positive charge with negative electrons inside 11 of 12 What did the gold foil experiment prove? The atoms have a fence nucleus with a positive charge 12 of 12
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