Classifying Matter

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Across
  1. 4. A type of substance containing atoms of two or more different elements chemically bonded together
  2. 7. Something with a positive charge
  3. 10. Substance that consits of just one ype of atom
  4. 11. O2
  5. 12. Has the atomic number 2
  6. 13. Something that moves around a electron cloud
  7. 15. Material
  8. 17. To form a solution by mixing evenly
  9. 19. A space in a atom filled with electrons
  10. 20. oxygen and a black solid.
Down
  1. 1. Has the atomic number 1
  2. 2. Has the atomic number 5
  3. 3. Matter with a composition that is always the same
  4. 5. a type of mxture in which individual substances are evenly mixed
  5. 6. Anything that has mass and takes up space
  6. 8. A type of mixture in which the individual substances are evenly mixed.
  7. 9. A small particle that is a building block of matter
  8. 14. The combination of symbols and numbers that represents a compound
  9. 16. Something with a negative charge.
  10. 18. CO2