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Across 2. Separation of two or more 6. Positive charged particle 10. No charge 13. A+BC=B+AC 16. The basic unit of a chemical element 17. Postive charged ion 20. Constant pressure 21. Liters,milliliters,gallons 22. Can not be broken down 23. Result 24. Table of chemical elements 25. Hard, shiny

Down 1. Constant voulme 3. A+B=AB 4. CO2,H2O 5. Negative charged ion 7. AB+CD=AD+CB 8. s,p,d,or f 9. Constant temperature 11. Dull, not shiny 12. Degree of hotness or coldness 14. C to K=+273 15. Undergoes change during a reaction 18. very cold 19. Negative charged particle