Crossword Puzzle

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Across
  1. 3. 2 or more substances that are combined that can be physically separated
  2. 5. an element or a compound
  3. 8. atoms of the same type grouped together
  4. 10. formula a combination of symbols and numbers that represent the number and types of elements
Down
  1. 1. two or more elements chemically joined together
  2. 2. building blocks
  3. 3. group of atoms held together with chemical bonds
  4. 4. in order of increasing atomic number
  5. 6. anything that has mass and takes up space
  6. 7. table table in which chemical elements are
  7. 9. bond attractive force that holds atoms together