Chemistry

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Across
  1. 2. (two words)a letter (or letters) of the alphabet used to represent an atom of a specific chemical element
  2. 6. a characteristic or fearure of a substance
  3. 7. a pure substance made up of two or more different atoms chemically bonded together
  4. 9. a row across the periodic table
  5. 10. how poisonous a substance is
  6. 11. (four words)a particle in which two or more atoms of different non-mental elements are chemically bonded together
  7. 14. (two words)occurs when the form of a substance changes
  8. 15. (two words)when the chemical make-up of a substance changes, and a new substance or substances formed
  9. 16. (two words) the abililty of a substance to transfer heat
  10. 17. the ability of a substance to catch fire
  11. 18. a pure substance made up of only one type of atom; cannot be broken down into a similar substance
  12. 19. (two words)the properties of substance that can be observed or examined without changing the composition of a substance
  13. 22. (two words)a collection of symbols and numbersthat represents the number of atoms in a particle of an element or compound
  14. 23. how shiny a material is
  15. 24. (two words)the properties that show how a substance reacts when combined with other substances
  16. 26. doesn't break down
  17. 28. (two words)occurs when a substance changes to produce a new substance
  18. 30. the ability of a substance to bend or be hammered into different shapes
  19. 31. (two words)a substance made up of the same type of particle
  20. 33. a substance used up in a chemical reaction
  21. 34. a molecule consisting of two atoms
Down
  1. 1. (four words)a particle in which two or more atoms of the same non-mental element are chemically bonded together
  2. 3. capable of decomposing by the action of micro-organisms
  3. 4. a new substance produced in a chemical reaction
  4. 5. a patina caused by the reation of copper with air or sea water over a long period of time
  5. 8. the breakdown of a metallic substance due to a chemical reaction with substances in the environment, such as oxygen and water
  6. 12. (two words) the ability of a substance to transfer electricity
  7. 13. a column down the periodic table
  8. 20. both a philosophy and ancient practice of science
  9. 21. a large molecule made up of small repeating subunits chemically bonded together
  10. 25. a substance made up of different types of particle, physically combined
  11. 27. the ability of a substance to be drawn into wires
  12. 29. a compound produced when iron reacts with oxygen and water in the atmosphere
  13. 32. a plastic made from starch derived from plants such as corn and potato