Chemistry-Bonding and structure 0.0 / 5 ? ChemistryBonding & shapesNational 5All boards Created by: R0ry w00dCreated on: 11-02-20 20:55 What is a Exothermic Reaction? A reaction which gives off heat. 1 of 24 What are the 2 shapes of molecules? Tetrahedral and Trigonal pyramidal 2 of 24 What is a bond? A join. 3 of 24 What is a metallic bond? The attraction between positive metal ions and delocalised electrons. 4 of 24 What is an ionic bond? The attraction between positive metal ions and negatively charged non-metal ions. 5 of 24 What is a Diatomic Molecule? Molecules made from 2 atoms held together by covalent bond(s) 6 of 24 What is a molecule? A group of non-metal atoms held together by covalent bond(s). 7 of 24 What is an electrode? Material with delocalised electrons which can conduct electricity. 8 of 24 What is Electrolyte? Ionic compound in solution or as a liquid. 9 of 24 What is Covalent Molecular? Discrete molecules with weak forces of attraction between the molecules. 10 of 24 What is a Covalent bond? Mutual attraction between shared negative electrons and the positive nuclei of each atom in the network. 11 of 24 What is a Covalent network? Extensive array of atoms where every atom is joined to amother by strong covalent bonds. 12 of 24 What is an Ionic lattice? An array of positive metal ions and negative non-metal ions held together by ionic bonds. 13 of 24 What is a Metallic lattice? An array of of positive metal ions in a sea of delocalised electrons. 14 of 24 What is Electrolysis Using electricity to break down a compound into its elements. 15 of 24 What is a d.c. current? A direct current used to identify the products of electrolysis. 16 of 24 What does delocalised mean? Free to move. 17 of 24 What are ions? Non-metal atoms which gain electrons to become negative ions and metal atoms losing electrons to become positive ions. 18 of 24 What is oxidation? Loss of electrons. 19 of 24 What is reduction? Gain of electrons. 20 of 24 What is the ion-electron equation? Equation showing reduction or oxidation in the data booklet. 21 of 24 What is Ion-reduction? Copy the order of the equation exactly as in the Electrochemical series. 22 of 24 What is Ion-oxidation? Reverse the order of the equation shown in the Electrochemical series. 23 of 24 What is decomposition? Break down of a compound. 24 of 24
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