ICP chapter 16

123456789101112131415
Across
  1. 2. cloud area around the nucleus of an atom where its electrons are most likely found
  2. 6. particles with a positive 1 charge
  3. 8. number the sum of the protons and the neutrons in the element
  4. 10. number the number of protons in the element
  5. 11. atomic mass the weighted-average mass of the mixture of its isotopes
  6. 13. mass number the sum of the protons and the neutrons in the element isotope atoms of the same element that have different numbers of neutrons. (different mass numbers)
  7. 14. horizontal rows in the periodic table
  8. 15. the vertical columns in the periodic table
Down
  1. 1. table the elements are arranged by increasing atomic number and by changes in physical and chemical properties
  2. 3. neutral particles that have 0 charge
  3. 4. with a negative 1 charge quark protons and neutrons are made of even smaller particles called
  4. 5. particles with a negative 1 charge
  5. 7. small positively charged center of the atom. contains the protons and neutrons
  6. 9. electron
  7. 11. the smallest piece of matter that still retains the properties of the element
  8. 12. dot diagram uses the symbol of the element and dots to represent the electrons in the outer energy level