Chemistry and Physics Lesson 3

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Across
  1. 3. The place where the electron spends its time buzzing around the atom TWO WORDS
  2. 7. The bond that's formed when atoms share their valence electrons TWO WORDS
  3. 8. The property that causes atoms to be attracted to or repelled by one another
  4. 10. When an ion forms bonds with other ions TWO WORDS
  5. 11. Contains at least two different elements combined
  6. 12. The center of an atom that contains the protons and neutrons
  7. 14. An atom that doesn't have the normal number of electrons TWO WORDS
  8. 15. The electrons in the outer shell of an atom TWO WORDS
  9. 16. An atom that has gained electrons; it's negatively charged
  10. 17. The positively charged particles in an atom
  11. 19. When an atom has eight electrons in its outer shell, making it stable TWO WORDS
Down
  1. 1. The number of nucleons an atom has
  2. 2. man=made elements TWO WORDS
  3. 4. The negatively charged particles in an atom
  4. 5. Atoms with different numbers of neutrons and protons
  5. 6. An atom that has lost electrons; it's positively charged
  6. 9. A group of one kind of atom
  7. 12. What the protons and neutrons together are called
  8. 13. The number of protons an atom has TWO WORDS
  9. 18. The neutrally charged particles in an atom