1					2											3
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21
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23
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Across 5. solid to gas 6. positively charged particle 7. made up of more than one atom 9. plum pudding model 11. accompanied by the release of heat. 14. negative particle 18. protects from ultraviolet 19. measure of the tendency of an atom to attract a bonding pair of electrons. 20. positive particle 21. vinegar 22. outer most electrons 23. most electronegative atom 24. strongest intermolecular force 25. 6.022140857 × 10^23 26. study of mater and changes

Down 1. negatively charged particle 2. mass of a given substance 3. table salt 4. the distance between successive crests of a wave 8. atom as a small, positively charged nucleus 10. accompanied by or requiring the absorption of heat 12. 100 degrees Celsius 13. weakest intermolecular force 15. center of atom 16. strongest acid 17. energy required to remove the most loosely bound electron