Chemistry Key Words 1 0.0 / 5 ? ChemistryDefinitionsA2/A-levelOCR Created by: BitziBooCreated on: 15-09-18 11:25 72584139106 Across 1. Heat content stored in a system (8) 5. takes electrons from another species (9, 5) 6. reaction that can take place n both the forwards and backwards directions (10) 8. Containing carbon atoms joined together in straight or branched chains (9) 9. outer shell pair of electrons not involved in bonding (4, 4) Down 2. Atom or group of atoms which is attracted to an electron rich centre or atom, where it accepts a pair of electrons to form a new covalent bond (12) 3. time taken for concentration of a reactant to half (4, 4) 4. Elimination reaction where water is removed to make an unsaturated molecule (11) 7. repeating trend in properties of the elements across each period of the periodic table (11) 10. A species that releases H+ ions in solution (4)
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