Compounds and Elements Crossword

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Across
  1. 4. A group of atoms chemically bonded together
  2. 7. Easily broken
  3. 8. A substance made up of two or more atoms bonded together
  4. 9. An element that is highly non reactive
  5. 11. A grid arrangement of all elements known
  6. 13. The number which determines the order of the elements in the periodic table
  7. 16. Tending not to chemically react with other substances
  8. 18. A combination of substances that can be physically separated
  9. 20. to chemically interact with other substances
Down
  1. 1. When atoms move around to form a new substance
  2. 2. A single substance without anything mixed in
  3. 3. Able to be pressed or hammered into a shape without breaking
  4. 5. A row in the periodic table
  5. 6. A column in the periodic table
  6. 10. A repeating arrangement of atoms in a solid
  7. 12. A substance made up of only one type of atom
  8. 14. A shiny element that conducts electricity and heat
  9. 15. An attractive force that holds two atoms together
  10. 17. The smallest particle of an element
  11. 19. A metal that typically doesn't conduct electricity or heat