c5 0.0 / 5 ? ChemistryThe earth and its atmosphereStructure and bondingRocks, ores, metals and alloysMetals, metal ores and alloysGCSEOCR Created by: SgmjbCreated on: 28-04-16 18:32 non-metals have weak ... intermolecular forces 1 of 17 when unreactive metals are displaced by more reactive ones precipitation reaction 2 of 17 most common element in the lithosphere oxygen 3 of 17 the earth's rigid outer layer lithosphere 4 of 17 second most common element in the lithosphere silicon 5 of 17 when atoms share bonds covalent 6 of 17 what are metals extracted from ore 7 of 17 covalent bonds are strong 8 of 17 how most non-metals exist molecular 9 of 17 silicon dioxide exists in a giant covalent structure 10 of 17 hardest naturally occurring substance diamond 11 of 17 what makes graphite conduct electricity layer of free electrons 12 of 17 how are more reactive metals reacted electrolysis 13 of 17 how are less reactive metals extracted redox with carbon 14 of 17 what makes metals good conductors sea of free electrons 15 of 17 positive electrode annode 16 of 17 negative electrode cathode 17 of 17
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