COVALENT STRUCTURES 0.0 / 5 ? ChemistryAtoms and compoundsGCSEAQA Created by: Bev LambourneCreated on: 20-03-14 11:18 Which structure do all ionic compounds form? Giant Structures 1 of 10 Why do they have high melting and boiling points? strong forces of attraction between oppositly charged ions 2 of 10 Why can ionic substances conduct when they are molten? ions can move 3 of 10 Why can ionic substances conduct electricity when dissolved but not when they are solid? when dissolved the ions can move 4 of 10 Give an example of a simple molecular substance. chlorine/oxygen/hydrogen iodide/water 5 of 10 In simple molecular compounds describe the bonding between atoms and between molecules. strong attraction between atoms,weak between molecules 6 of 10 Can simple molecular compounds ever conduct electricity? No 7 of 10 Give two forms of carbon which are giant covalent substances. diamond and graphite 8 of 10 Why do giant covalent substances have high melting and boiling points? strong covalent bonding through the structure 9 of 10 Why can graphite conduct electricity? bonding between the layers is weak and these electrons conduct electricity 10 of 10
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