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5 Written questions

5 Matching questions

  1. What is a radioactive isotope?
  2. What is ion?
  3. What are isotopes?
  4. Which part of the atom has the most energy?
  5. What is an ionic bond?
  1. a Elements that exist in different forms
    Forms of an element that differ in mass
    Same num of protons and electrons but diff num of neutrons
  2. b is one in which the nucleus decays, giving off particles of energy.
  3. c The outer shell.
  4. d The term for atoms that are electronically charged as a result of gaining/losing electrons.
  5. e The attraction btwn opposite charged ions.

5 Multiple choice questions

  1. Forms when 2 atoms share 1 or more pairs of outer shell electrons and forms a molecule.
  2. Solid
  3. Formed when a particularly positive atom from one polar molecule is attracted to the partially negative atoms in another molecule.
  4. cohesion
  5. A subatomic particle w/ a single unit of positive electrical charge (+)

5 True/False questions

  1. What are the 4 most abundant elements in living cells?the atomic number.


  2. What is the atomic number?The number of protons in an atom.


  3. What is a neutron?A subatomic particle w/ a single unit of positive electrical charge (+)


  4. How many electrons can the 2nd and 3rd shell of an atom hold?up to 8 electrons.


  5. The bond between the hydrogen atom of one water molecule and the oxygen atom of another water molecule is made possible bythe polarity of the water molecule


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