Chemistry Definitions 0.0 / 5 ? ChemistryElectrode potentialsASAQA Created by: HeatherCreated on: 04-10-14 16:48 Acid A proton Donor 1 of 10 Dative Covalent (co-ordiante) bond? A shared pair of electrons where both electrons that are shared are from one of the bonding atoms only, 2 of 10 Electronegativity The ability of an atom to attract the bonding electrons in a covalent bond 3 of 10 First Ionisation Energy The energy required to remove one eletron from each atom in 1 mole of gaseous atoms to form 1 mole of gaseous 1+ atoms, 4 of 10 Successive ionisation Energy The energy required to remove each electron in turn, 5 of 10 Disproportionation The oxidation and reduction of the same element in a redox reaction 6 of 10 Allotropes Different physical forms of the same element where atoms are arranged differently e.g. carbon has three allotropes- Diamond, graphite and fullerences 7 of 10 Atom economy The efficiency of a chemical reaction by comparing the total number of atoms in the product with the total number of atoms in the reactants, 8 of 10 Atomic orbital A region of space around an atomic nucleus with a high possibilty (95%) of finding an electron, 9 of 10 polar Describes a molecules in which the charge is not symetrically distributed so that one area is slightly positve and theother slightly negaitve charged, 10 of 10
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