Chemistry 101

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Across
  1. 3. A combination of two or more pure substances where both substances keep their own identity
  2. 5. Two Atoms that are joined together. All compounds are ________
  3. 7. Atoms are defined by there ______________
  4. 9. Substances that are made of only one single type of atom or only one type of molecule
  5. 11. A particle inside a nucleus of an Atom
  6. 12. A reversesible change
  7. 14. Particles outside the nucleus of an Atom
  8. 15. A substance that is made entirely from one single type of Atom
Down
  1. 1. A substance formed when 2 or more chemical elements are chemically bonded together
  2. 2. Anything that takes up space
  3. 4. Atom structure that is irregular and lacks repeating pattern
  4. 6. THe smallest unit of matter that makes up all physical things
  5. 8. A structure of molecules - ions - or atoms that are held together in a specific ordered arrangement
  6. 10. A particle inside the nucleus of an Atom
  7. 13. An irreversible change