Chemisty Crossword

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Across
  1. 3. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  2. 5. The unit used in measuring an atom's mass.
  3. 6. Change of state from a liquid to a solid
  4. 9. change of state from a gas to a solid
  5. 13. The tiniest part of an element that represents said element. Contains a nucleus, and a balanced amount of protons and neutrons.
  6. 17. odorless gas;produced by incomplete combustion of chemicals containing carbon
  7. 18. pure substance that cannot be broken down into other substances; substance made up of only one type of atom
  8. 19. amount of mass in a given volume of a substance
  9. 22. A compound that dissolves in water to form a solution with a pH lower than 7.
  10. 23. change of state from a liquid to a gas
  11. 24. an experiment in which all reactants and all products of a chemical reaction are accounted for
  12. 25. process in which molecules move from an area of higher concentration to one of lower concentration
  13. 26. mixing of a substance with air or water;this reduces the substance’s concentration
Down
  1. 1. change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones
  2. 2. Group 2 elements on the periodic table. Not as reactive as group 1 but more reactive than all other groups.
  3. 4. a substance that helps a chemical reaction to proceed more quickly
  4. 7. chemical combination of two or more elements in a specific ratio
  5. 8. a reaction that takes place when two or more substances react to form new substances
  6. 10. chemical reaction that takes place in cells; food (sugar) reacts with oxygen to produce energy, water, and carbon dioxide
  7. 11. Group 1 elements on the periodic table. the most reactive elements. Does not include hydrogen.
  8. 12. description of how a substance interacts with other substances, such as acids;chemical properties are observable only when a chemical change occurs
  9. 14. principle that matter is not created or destroyed in a chemical reaction; the mass of the products always equals the mass of the reactants
  10. 15. chemical reaction that absorbs energy
  11. 16. change of state from a gas to a liquid
  12. 20. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  13. 21. A compound that dissolves in water to form a solution with a pH higher than 7