vocab for chem

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Across
  1. 2. the 14 elements with atomic numbers from 90 to 103
  2. 4. An abbreviation for an element or atom
  3. 7. Contains nonmetals, 7 valence electrons in it's outermost energy level. Very reactive
  4. 9. A change in matter that produces one or more new substances
  5. 10. Elements that are good conductors of heat and electric current.
  6. 11. gas to liquid
  7. 14. an element or substance that is not a metal.
  8. 15. has a definite volume, but not a definite shape.
  9. 16. A change in a substance that does not change its identity
  10. 17. the d-block elements are metals with typical metallic properties
  11. 19. a substance made by mixing other substances together.
  12. 20. Vertical column in the periodic table
  13. 22. a thing that is composed of two or more separate elements; a mixture.
  14. 25. depend on the amount of matter present
  15. 27. do not depend on the amount of matter present
  16. 29. number of protons
  17. 30. a mixture in which the composition is not uniform throughout
  18. 31. liquid to gas
  19. 33. non-metals, group 18, the most non-reactive elements
  20. 34. solid to liquid
  21. 36. A mixture in which substances are evenly distributed throughout the mixture
  22. 38. liquid to solid
  23. 39. Characteristic that cannot be observed without altering the substance
Down
  1. 1. metallic elements in group 2 of the periodic table which are harder than the alkali metals and are also less reactive
  2. 3. process that changes one set of chemicals into another set of chemicals
  3. 5. A solid that forms from a solution during a chemical reaction.
  4. 6. no definite shape or volume
  5. 8. Number of protons and neutrons
  6. 12. Definite shape and volume
  7. 13. The elements in Group 1 (lithium, sodium, potassium, rubidium, cesium, and francium)
  8. 18. A pure substance made of only one kind of atom
  9. 19. everything that takes up space and has mass
  10. 21. A chart of the elements showing the repeating pattern of their properties
  11. 23. easy to shape or bend
  12. 24. the characteristics of a substance that can be observed or measured without changing the substance
  13. 26. an element that has properties of both metals and nonmetals
  14. 28. Matter that always has exactly the same composition
  15. 32. smallest unit of matter
  16. 35. The amount of space an object takes up
  17. 37. horizontal row in the periodic table