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Across 1. What is another name for demineralized water? 5. A hydrogen ion releasing substance. 8. A compound that does not contain water can be called:_______? 10. What type of insoluble solid is formed from a reaction that occurs in an aqueous solution? 14. An energy releasing chemical reaction. 15. A unit of pressure that is equal to 1 mmHG. 18. What is the name of a metal that reacts at room temperature with water? 19. A flowing liquids’ resistance. 20. Why are you able to fill a glass of water slightly above the rim?

Down 2. An energy absorbing chemical reaction. 3. Water that contains a variety of anions and cations such as calcium, iron or magnesium. 4. What is the name of the digit in a chemical formula that tells you the number of ions or atoms that are in the substance? 6. A substance that does not permanently change yet speeds up a reaction. 7. What is the digit called that is front of a chemical formula; it is used to help balance the equation? 9. A room in your house contains no gas molecules, it is a _________. 11. Water that contains a variety of anions and sodium ions. 12. A hydroxide ion releasing substance. 13. In the lab you are trying to determine the amount of a gas by the amount of water it displaces, this is_________ by displacement. 16. A gas that strays under certain conditions from normal behavior. 17. An acid-based reaction produces what ionic compound?