Chemistry

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Across
  1. 2. The smallest building block of matter
  2. 3. atomic number of Carbon (C)
  3. 6. A bond between a metal and non- metal
  4. 8. Go across the periodic table (rows)
  5. 10. When the outer shell is not full
  6. 11. Something that takes up space and has mass
  7. 12. Atomic_______. Gives us the protons and electrons
  8. 13. Amount of electrons in Argon (AR)
  9. 15. Found on the circling the nucleus
  10. 19. This bond is the weakest
  11. 20. Atoms are tightly packed and move slowly
  12. 21. What is is called when two or more atoms combine
  13. 22. Atomic _________. P+N
Down
  1. 1. They have the same amount of valence electrons
  2. 4. This bond is the strongest
  3. 5. model Shows an element with all the electrons
  4. 7. A bond between two non-metals
  5. 9. The electrons in the outer shell
  6. 14. Atoms have lots of energy and move very fast.
  7. 16. Atoms has space but still bump into each other
  8. 17. Where the protons and neutrons are found.
  9. 18. Positively charged particles in an atom
  10. 19. When the outer shell is full an atom is____