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Across 1. Bond formed between hydrogen atom and N, O or F (2 Words) 2. Word missing in *1* 6. Type of electrons found in metallic bonding 8. e.g. boron trifluoride, where the bond angles are 120 (2 Words) 9. Weak induced dipole attractions between non-polar molecules (3 Words) 11. e.g. Sulfur hexafluoride where the bond angles are 90 12. Lower in ice than water; ice only covers lake surface as a result 13. e.g. Carbon Dioxide, with two double bond pairs and bond angle 180 14. Formed from two bonded pairs and two lone pairs; bond angle 104.5 (2 Words) 15. ----- dipole-dipole forces; attractions between polar molecules 16. Description of metals in regards to heat and electricity 17. ----- heat of *1*, where much energy is needed to change water into vapour

Down 1. High specific ---- ----, where much energy is needed to change water temperature (2 Words) 3. ----- electric dipole, where there are more electrons on one side of a molecule than the other 4. Formed from three bonded pairs and one lone pair; bond angle 107 5. Formed from four bonded pairs of electrons; bond angle 109.5 7. High in water and allows certain insects to walk on water (2 Words) 10. e.g metals, which can be bent into different shapes