Unit 1 Chemistry

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Across
  1. 2. Characteristic or feature of a substance
  2. 4. Means "not stable"
  3. 8. A subatomic particle with a neutral charge
  4. 9. Transition from gas to liquid
  5. 12. Easiness to be stretched into a wire
  6. 13. Transition from solid to gas
  7. 15. Anything that has mass and volume
  8. 18. Atomic number 3
  9. 23. A negative ion
  10. 24. A pure substances that contains 2 or more different elements in a fixed ratio
  11. 25. WHMIS symbol for flame over circle
  12. 28. A compound when a metal reacts with a non-metal
  13. 29. An atom that has lost or gained electrons
  14. 30. Matter that contains 2 or more different types of pure substances
  15. 34. Group 2, Period 3
  16. 35. An ionic compound of lithium and sulphur
  17. 36. The most reactive group of metals
  18. 39. An ionic compound of 2 nitrogen and 1 oxygen
  19. 44. A positive ion
  20. 45. A compound that is generally made from 2 non-metal elements
  21. 47. Observations that can be identified using our senses
  22. 48. The most reactive group of non-metals
  23. 50. A molecular compound of 2 hydrogens and oxygen
Down
  1. 1. An educated guess/prediction
  2. 3. A pure substance that cannot be broken down
  3. 5. A horizontal row of elements
  4. 6. A molecular compound of 1 carbon and 2 oxygen
  5. 7. Most reactive non-metal
  6. 10. The most stable group of elements
  7. 11. Amount of matter per unit volume
  8. 14. Information sheet on hazardous workplace products
  9. 16. The smallest part of an element that give it its properties
  10. 17. A vertical column of elements
  11. 19. Transition from solid to liquid
  12. 20. The outermost energy level
  13. 21. Particles are always _______
  14. 22. Observations that involve measurement or numbers
  15. 26. Transtition from liquid to solid
  16. 27. Transition from liquid to gas
  17. 31. Transition from gas to solid
  18. 32. A chart of known
  19. 33. Feel of a surface
  20. 37. The sum of protons and neutrons of an atom
  21. 38. A subatomic particle with a negative charge
  22. 40. A group of atoms that share electrons
  23. 41. All particles have ______ between them
  24. 42. Shininess
  25. 43. A subatomic particle with a positive charge
  26. 46. Atomic number 2
  27. 49. Atomic number 3