c3 Science 3.0 / 5 based on 2 ratings ? ChemistryGCSEAll boards Created by: Hannah PetzCreated on: 10-03-11 20:59 ALL substances are made up of atoms. PROTONS + NEUTRONS 0 (except hydrogen) ELECTRONS - 1 of 14 ELEMENTS are just ONE type of atom. 2 of 14 COMPOUNDS are formed from 2 or more ELEMENT chemically joined. 3 of 14 Covalent bonding 2 atoms share electrons 4 of 14 IONIC BONDING atoms turn into ions. Lose or gain electrons 5 of 14 REACTANTS Substance you start with before a reaction 6 of 14 PRODUCTS New formed substances 7 of 14 Group (columns) 8 of 14 Periods (rows) 9 of 14 Formulae show different elements in a compound number of atoms 10 of 14 Brackets: everything inside it is multiplied by the number outside 11 of 14 Displayed formula Different type of atom Number of each different type of atom Covalent bonds 12 of 14 Copper (II) carbonate CuCO3 13 of 14 Iron (II) carbonate FeCO3 14 of 14
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