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Across 5. the mass of one mole of a substane 7. quantity measured in grams 8. type of equation in which one element takes another's place 10. first thing you must do to your equation 11. what does that arrow mean? 12. don't use these to balance equations 14. his number represents the number of items in one mole 16. what results from a chemical reaction

Down 1. the opposite of a synthesis reaction 2. two elements switch partners in this type of reaction 3. always found on the right side of a reaction 4. use these to balance equations 6. another name for a combination reaction 9. formula showing the lowest ratio of elements in a compound 13. the amount of space an item takes up 15. a counting number equal to 6.02 x 1023