8th Grade Science

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Across
  1. 3. a small particle that is a building block of matter
  2. 5. number this is under the name of each element on the periodic table
  3. 6. a gas that enables files to burn and when combined with carbon becomes carbon dioxide
  4. 9. a type of mixture in which the individual substances are not evenly mixed
  5. 10. a type of substance containing atoms of two or more different elements chemicly bonded together
  6. 14. atoms can combine and arange in this many different ways
  7. 15. the small 2 in Co2
  8. 16. the diameter of this is about 1 million time bigger than an atom
  9. 18. a black solid and when bonded with oxygen forms carbon dioxide
  10. 19. the combination of symbols and numbers that represents a compound
  11. 20. is a substance that consists of just one type of atom
  12. 21. protons and neutrons make up this
Down
  1. 1. matter with composition
  2. 2. a type of mixture in which the individual substances are evenly mixed
  3. 4. that can vary in composition
  4. 7. moves with neutrons around the Nucleus
  5. 8. has mass and takes up space and is matter but not sound or light
  6. 11. means to form a solution by mixing evenly
  7. 12. part of an atom and starts with a p
  8. 13. electrons move quickly around this area
  9. 17. anything that has mass and takes up space