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Across 5. tells the smallest whole number ratio of atoms 9. attractive forces that hold different atoms or ions together 10. determines your entire genetic makeup 11. example is sugar glucose 13. covalently bonded compound made up of molecules 14. made up of amino acids 15. hydrocarbons having only single covalent bonds 17. bonds formed between oppositely charged ions 20. compounds model represented by letters and lines 23. the combination of elements producing substances with different properties 24. the distance between the nuclei of two bonded atoms 25. made up of large molecules 26. naturally occuring organic compounds 27. the combination of substances with no chemical bonding 28. tells how atoms are oriented in space 29. made up of carbon, hydrogen, oxygen, and nitrogen

Down 1. Tue Mar 22 01:01:03 2005 Start Tue Mar 22 01:01:03 2005 Finish oxygen molecule attracted to a hydrogen molecule 2. bonds formed by sharing one or more pairs of electrons 3. examples are mono, di, tri, tetra 4. compound model made up of spheres and rods connecting them 6. having both ionic and covalent bonds 7. ions having lost electrons and are positively charged 8. strong bonds as found in table salt 12. compound model shown with spheres molded together 16. have-OH groups, behave like water molecules 18. moving charges 19. tells how many atoms are in one molecule 21. ions having gained electrons and are negatively charged 22. bonds formed by metals like copper