Combinations and States of Matter

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Across
  1. 3. a substance composed of two ore more elements or compounds physically combined
  2. 10. positively charged particle with a mass of 1
  3. 11. the number of protons and neutrons in the nucleus
  4. 12. the dense center of an atom
  5. 13. the tiny building blocks of matter
  6. 15. a charged atom
  7. 16. anything that has mass and takes up space
  8. 17. negatively charged particle with a mass of 0
  9. 19. state of matter with the highest energy
  10. 20. a mixture where at least one substance is dissolved in another
Down
  1. 1. a substance composed of atoms of more than one element chemically bonded together
  2. 2. the number of protons in the nucleus
  3. 4. atoms of the same element with different numbers of neutrons
  4. 5. when a liquid turns into a gas
  5. 6. neutral particle with a mass of 1
  6. 7. different types of atoms
  7. 8. a substance composed entirely of one type of atom
  8. 9. when a gas turns into a liquid
  9. 14. when a liquid turns into a solid
  10. 16. when a solid turns into a liquid
  11. 18. state of matter where atoms are tightly packed but still flow freely
  12. 20. state of matter where atoms are fixed in place