Chemistry Puzzle

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Across
  1. 5. an element that is a good electrical and heat conductor
  2. 6. a pure substance that cannot be broken down
  3. 7. a change in which one or more substances are converted into different substances
  4. 8. Vertical column of the periodic table
  5. 9. refers to the closeness of a set of measurements of the same quantity made in the same way
Down
  1. 1. the study of substances and processes in living things
  2. 2. a mixture that is uniform in composition
  3. 3. anything that has mass and takes up space
  4. 4. Horizontal row of the periodic table
  5. 5. an element that has characteristics of metals and nonmetals