Topic 1&2 Review Puzzle

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Across
  1. 6. Able to be hammered into sheets
  2. 10. Negatively charged subatomic particle
  3. 11. Process where substances change into new substances
  4. 13. Word meaning indivisible particle
  5. 17. Scientist known as the father of modern chemistry
  6. 18. Scientist who studied gases and supported particle theory
  7. 19. Describes how a substance reacts to form new substances
  8. 20. Material that allows electricity to flow
  9. 22. Shiny and conductive material usually found on the left of the periodic table
  10. 24. Reactive metals found in Group 2
  11. 26. Change that produces a new substance
  12. 30. Able to be drawn into wires
  13. 32. Greek philosopher who believed in four elements
  14. 33. Dull and brittle material usually found on the right of the periodic table
  15. 35. The shininess of a material
  16. 37. Positively charged particle in the nucleus
  17. 39. Pure substance made of two or more elements chemically combined
Down
  1. 1. Material that does not allow electricity to flow
  2. 2. Highly reactive metals found in Group 1
  3. 3. ____________ Hazardous Materials Information System
  4. 4. Highly reactive non-metals found in Group 17
  5. 5. Characteristic observed without changing the substance
  6. 7. How easily a substance undergoes a chemical change
  7. 8. Dense and positively charged center of an atom
  8. 9. Horizontal row on the periodic table
  9. 12. Stable and unreactive elements found in Group 18
  10. 14. Scientist who discovered the electron
  11. 15. Change that does not create a new substance
  12. 16. Pure substance made of only one type of atom
  13. 18. Scientist who proposed electrons move in shells
  14. 20. a cloudy mixture but particles cannot be separated
  15. 21. Early practice that mixed science and magic
  16. 23. Greek thinker who proposed matter is made of atomos
  17. 25. Combination of substances that are not chemically combined
  18. 27. Scientist who proposed the billiard ball model
  19. 28. Element with properties of both metals and non-metals
  20. 29. Scientist who discovered the nucleus using gold foil
  21. 31. Scientist who organized the periodic table and predicted elements
  22. 34. Neutral particle in the nucleus
  23. 36. Vertical column on the periodic table
  24. 38. Smallest unit of matter