chapter 16 review - jenelle

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Across
  1. 6. are protons and neutrons that are composed of smaller particles
  2. 7. dot diagram uses the chemical symbol of an element surrounded by the dots to represent the number of electrons in the outermost energy level.
  3. 9. are an horizontal rows of elements in the periodic table
  4. 10. are atoms of the same element that have different numbers of neutrons
  5. 12. number is the number of protons in an atoms nucleus is equal to its atomic number
  6. 14. are particles with an electric charge of 1-
Down
  1. 1. are particles in the nucleus with an electric charge of +1
  2. 2. are electrically neutral particles in the nucleus; they do not have a charge.
  3. 3. number is the number of protons in an atoms nucleus is equal to its mass number
  4. 4. is the small positively charged center of the atom
  5. 5. are vertical columns in the periodic table
  6. 8. atomic mass is the weighted average mass of all naturally occurring isotopes of an element, measured in atomic mass units (amu), according to their natural abundances
  7. 9. table are the elements that are arranged by increasing atomic number, not atomic mass, and by periodic changes in physical and chemical properties
  8. 11. cloud is the area around the nucleus of an atom where electrons are most likely to be found
  9. 13. is the smallest particle of an element that retains the element's properties