Unit 1 Vocabulary

1234567891011
Across
  1. 2. horizontal rows of the periodic table.
  2. 8. negatively charged subatomic particles.
  3. 9. basic unit of a chemical element.
  4. 10. natural materials that do not produce heat or electricity
Down
  1. 1. neutral charged subatomic particle.
  2. 3. two or more types of atoms that have the same number of protons but different numbers of neutrons
  3. 4. positively charged subatomic particle.
  4. 5. natural materials that have high electrical conductivity.
  5. 6. a column in the periodic table of the chemical elements.
  6. 7. relative capacity of an atom, molecule, or radical that undergoes a chemical reaction with another atom
  7. 10. central and most important part of an object.
  8. 11. describes the number of protons in the nucleus of an atom.