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5 Written questions

5 Matching questions

  1. What are the 4 most abundant elements in living cells?
  2. How many electrons can the 2nd and 3rd shell of an atom hold?
  3. What is a covalent bond?
  4. What is an ionic bond?
  5. The bond between the hydrogen atom of one water molecule and the oxygen atom of another water molecule is made possible by
  1. a Forms when 2 atoms share 1 or more pairs of outer shell electrons and forms a molecule.
  2. b The attraction btwn opposite charged ions.
  3. c up to 8 electrons.
  4. d the polarity of the water molecule
  5. e Oxygen, carbon, hydrogen, and nitrogen.

5 Multiple choice questions

  1. is one in which the nucleus decays, giving off particles of energy.
  2. Formed when a particularly positive atom from one polar molecule is attracted to the partially negative atoms in another molecule.
  3. 25.
  4. an electronically neutral subatomic particle.
  5. Protons and neutrons.

5 True/False questions

  1. What physical states is matter found in?Solid


  2. What is an electron?an electronically neutral subatomic particle.


  3. What determines which element it is?Substances that cannot be broken down into other substances.


  4. What is ion?The term for atoms that are electronically charged as a result of gaining/losing electrons.


  5. What are the three types of chemical bonds?Ionic