Chemistry

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Across
  1. 2. when two or more substances are combined but not chemically
  2. 4. makes up everything in the world
  3. 6. positive atoms that can also determine the number of electrons and the atomic number of an element
  4. 7. pure substance that can't be broken down into simpler substances physically
  5. 8. when two things that are combined are the same
  6. 10. rings/shells around nucleus
  7. 12. neutral atoms that have no charge
  8. 13. rows left to right on the Periodic Table
  9. 14. columns up to down on the Periodic Table
  10. 15. negative atoms that can also determine number of protons and group for elements
  11. 16. the unit we're learning
Down
  1. 1. chart of elements ranked by characteristics
  2. 3. electrons in the outer most shell of a energy level of a nucleus
  3. 5. when atoms of 2 or more are chemically combined
  4. 9. when two things are combined are different
  5. 11. number on the Periodic Table that ranks the element