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Across 3. proposed nuclear model for atoms 5. the solid matter in a solution 8. an observation that involves measurments and numbers 11. equal volumes of any gas(at same temp. and pressure) contain equal number of molucules 13. loss of electrons 14. the prediction of how much of a substance will react or be produced in a reaction 16. concerning gases: volume increases as temperature _______ 21. father of modern chemistry 22. the reactant in a chemical reaction that is left over when a reaction stops 23. bonds within the molecule

Down 1. STP stands for 2. substance dissolved in a solution 4. a pure substance 6. mass is conserved in a chemical reaction 7. positively charged ion 9. the solute in a solution that conducts electricity 10. electrons on the outer level of the ion 12. element + element ----> compound 14. homogeneous mixture of solute in a solvent 15. gives off heat 16. a gas at a high temperature, low pressure, and small molecules 17. average relative mass of all the naturally occuring isotopes of an element 18. the reactant in a chemical reaction that limits the amount of product that can be formed 19. volume of solute / volume of solvent 20. PV=PV