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Across 1. this is a property measured in grams 4. these are on the right side of a reaction equation, what is formed when the reaction is complete 7. This is the physical state/phase most nonmetals are in 8. these are on the left side of a chemical reaction equation 10. a reaction that has one reactant that breaks down into two or more products 12. A reaction where oxygen is a reactant and carbon dioxide and water are produced 13. the type of metals that usually have varying oxidation numbers (use roman numerals) 16. these gases don't react with anything 17. These elements are good conductors of electricity and heat, they also can be malleable and/or ductile 18. this is a subatomic particle found in the nucleus, the number of these determine what the element is 19. the charge on a cation

Down 2. a reaction where two or more reactants are combined to make a single product 3. these are atoms with the same number of protons, but different numbers of neutrons 5. this is the name given to the outermost electron shell of any atom 6. this mineral is found in your bones 9. a number in front of a formula that tells you how many molecules of that substance 11. ________________ replacement is a reaction that starts with two pairs of compounds and reacts to produce two different pairs of compounds 14. the only element that shares the same name with a US coin 15. these subatomic particles are found in the nucleus and have no charge