Atomic Structure, Periodic Table, and Bohr Models

1234567891011121314151617181920
Across
  1. 2. the amount of matter that an object is made up of
  2. 4. a small particle that makes up an atom
  3. 8. a negatively charged subatomic particle
  4. 10. a table of the chemical elements arranged by atomic number
  5. 14. this element has atomic number 8
  6. 16. the measure of the force of gravity on an object
  7. 19. this element has 3 protons
  8. 20. a visual representation of the number of protons, neutrons, and electrons in an atom
Down
  1. 1. tells us the number of protons that an atom contains
  2. 2. anything that has mass and takes up space
  3. 3. the central part of the atom where neutrons and protons are located
  4. 5. a subatomic particle that has no charge
  5. 6. this element has the symbol Fe
  6. 7. the "building block" of all matter
  7. 8. a pure substance that is made up of only one type of atom
  8. 9. mass to calculate this, add the number of protons plus the number of neutrons
  9. 11. the outside part of the atom where the electrons are located
  10. 12. one or two letters that represent an element
  11. 13. the study of matter and how it changes
  12. 15. this element has 28 protons in its atomic nucleus
  13. 17. this element has the symbol N
  14. 18. a positively charged subatomic particle