isabel

12345678910111213141516171819
Across
  1. 5. - have 1-2 valence electrons
  2. 6. - where protons and neutrons are located
  3. 10. the same composition throughout
  4. 12. - most abundant metal in the Earth's crust
  5. 13. - Mat be separated physically into pure substances
  6. 14. - # defies the element and the same number of protons
  7. 15. - made the atomic theory of matter
  8. 16. - Group 1 metals
  9. 18. - weakest force in nature
  10. 19. - Everything that has mass and occupies space
Down
  1. 1. - this element has 1 proton
  2. 2. vertical columns in the periodic table
  3. 3. - element will melt in your hand
  4. 4. - negatively charged subatomic particle in an atom
  5. 7. - This is the greatest of the four forces
  6. 8. - The number in front of the letters in a chemical equation
  7. 9. - most stable group
  8. 11. - Horizontal rows in the periodic table
  9. 14. - always found combined
  10. 17. - drawn into a wire