Chemistry Crossword Puzzle

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Across
  1. 2. A form of matter where molecules are closely bound together and holds its shape
  2. 4. Anything with mass and volume
  3. 7. The sum of all the protons and neutrons in the nucleus of an atom
  4. 10. A form of matter and takes the shape of whatever container it is in
  5. 11. Negatively charged particles orbiting around the nucleus in an atom
  6. 13. The number of protons in the nucleus
  7. 14. The amount of matter in an object
Down
  1. 1. The amount of space that a material takes up
  2. 3. The basic building block of matter
  3. 5. A substance made entirely from one type of atom
  4. 6. Positively charged particles in the nucleus of an atom
  5. 8. Particle in the nucleus of an atom besides the proton
  6. 9. Weighted average of all the element's isotopes
  7. 12. A form of matter and it takes the shape and volume of whatever container it is in