Chemistry Unit 2 Definitions 0.0 / 5 ? ChemistrydefinitionsASAQA Created by: hannahcolemanCreated on: 22-03-14 17:30 85279314610 Across 1. the enthalpy change of a reaction depends on the initial and final states of the reaction and is independent of the route by which the reaction occours (5, 3) 4. the process of electron gain (9) 6. molecules with at least one carbon-carbon double or triple covalent bond (11) 7. different structural modifications of an element (9) 10. the loss of heat from a system; enthalpy change is negative (10) Down 2. the gain of heat by a system; enthalpy change is positive (11) 3. a species which contains a carbon atom with a positive charge (11) 5. a substance which alters the rate of reaction without itself becoming consumed (8) 8. compounds with the same structural formula but with bonds arranged differently in space (15) 9. used for reactions that involve both oxidation and reduction. (5)
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