GCSE C2a Key Words 4.0 / 5 based on 2 ratings ? ScienceChemistryGCSEAQA Created by: jatyizationCreated on: 01-04-13 18:27 Ionic Bonding Metal Giving a non-metal electrons to have a full outer shell.(8) 1 of 8 Alkali Metals Found in Group 1, have 1 outer electron, reacts with water. E.G Caesium 2 of 8 Ionic lattice Strong electrostatic forces hold together ions in a giant lattice. High melting and boiling points. 3 of 8 Multi-atom Ions Many negative Ions are not single atoms that have lost electrons to become ions, but sometimes several non-metals that are covalently bonded together. 4 of 8 Covalent Lattices Covalent compounds with giant structures called lattices, includes: Graphite, Diamond, and silicon dioxide. 5 of 8 Thermosoftening polymer with a tangle of smooth chains, easy to recycle and melt. Easy for molecules to slide past each other. 6 of 8 Thermosetting Polymer with more side chains and links to other chains, hard for chains to slide at all. Hard to recycle and cannot melt. 7 of 8 HDPE & LDPE Made from same monomer but by different catalysts, temperatures and pressure giving HDPE and LDPE different properties. 8 of 8
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