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Across 1. atoms or groups of atoms with a charge (positive or negitive) 5. positively charged 6. negatively charged 7. in the modern model of the atom, each energy level is divided into smaller 10. as temperature goes up then pressure goes up 14. AgNo3 + MgCl2 -> AgCl +Mg(No3)2 15. K2Co3 -> K2o + Co2 16. in _____, electrons move in definite "orbits" round the nucleus 17. discovered at constant pressure gas,volume, temperature are directly proportional 18. 2N2 + 3H2 -> 2NH3 21. Fe3o4 +H2 -> Fe + H20 23. what do you have to have to make an atom happy 24. pv=nRT 25. p1v1=p2v2

Down 2. Al + Cl2 -> Al2Cl3 3. two or more nonmetals that share an electron 4. what is the peanut or dumbell shaped sublevel 8. a way to indicate the number of valence electrons around an atom 9. C2H6 + O2 -> Co2 + H20 11. particles that smaller than the atom 12. 298K 13. what is outside the nucleus 19. 523K 20. 0.0821 22. a metal that transfers one or more electrons to a nonmetal