Bonding, structure and properties (topic 2) 0.0 / 5 ? ChemistryStructure and bondingNanoscienceGCSEAQA Created by: MolliedyerCreated on: 19-02-18 20:17 What are cations? positive ions 1 of 12 What are anions? negative ions 2 of 12 Properties of ionic compunds high melting point; dissolve easily; solid= can't conduct electricity; ions can move when molten or dissolved 3 of 12 Disadvantages of dot and cross diagrams Don't show: structure, relative size or how atoms are arranged 4 of 12 what are Macromolecules? giant covalent structures 5 of 12 Properties of Diamond very strong; 4 covalent bonds; high melting point; no free electrons 6 of 12 Properties of Graphite no covalent bonds between layers; slippery; only 3/4 electrons used so delocalised electrons 7 of 12 Properties of Graphene One atom thick; strong and light 8 of 12 Properties of Fullerenes Tubes/hollow balls; high surface area; drugs; tensile strength 9 of 12 Nano particle size 1x10^-9m to 1x10^-7 10 of 12 Uses of fullerenes Catalysts; carry drugs; lubricants 11 of 12 Structure of a crystal of sodium chloride Giant ionic lattice- regular lattice; strong electrostatic forces of attraction in all directions. 12 of 12
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