definitions C3 0.0 / 5 ? Chemistryall chemistry 3GCSEOCR Created by: brogan2001Created on: 13-06-17 13:06 ion charged atom 1 of 11 ionic bond when a positive ion meets a negtive ion they'll be attracted and join together 2 of 11 covalent bond when non-metal atoms combine together they form covalent bonds by sharing a pair of electrons; the bond is a shared pair, no atom loses electrons 3 of 11 exothermic reaction gives out energy to the surroundings, in the form of heat, shown by a rise in temperature 4 of 11 endothermic reaction takes in energy from surrounding, in form of heat, shown by fall in temperature 5 of 11 specific heat capacity amount of energy needed to raise the temperature of 1 gram of water by 1oc. 6 of 11 explosion fast reaction that releases a lot of gaseous products 7 of 11 catalyst increases speed of reaction, without being chemically changed or used up in reaction 8 of 11 atom economy percentage of reactants changed to useful products 9 of 11 fullerenes molecules of carbon, shaped like closed tubes or hollow balls. 10 of 11 nanotubes tiny hollow carbon tubes 11 of 11
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