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5 Written questions

5 Matching questions

  1. Which part of the atom has the most energy?
  2. What are elements?
  3. What is a radioactive isotope?
  4. What makes up the nucleus?
  5. What is an electron?
  1. a A subatomic particle w/ a negative charge.
  2. b Substances that cannot be broken down into other substances.
  3. c is one in which the nucleus decays, giving off particles of energy.
  4. d Protons and neutrons.
  5. e The outer shell.

5 Multiple choice questions

  1. Electrons.
  2. 25.
  3. an electronically neutral subatomic particle.
  4. The term for atoms that are electronically charged as a result of gaining/losing electrons.
  5. Forms when 2 atoms share 1 or more pairs of outer shell electrons and forms a molecule.

5 True/False questions

  1. What is matter?The sum of the number of protons and neutrons in its nucleus.


  2. What are the three types of chemical bonds?Formed when a particularly positive atom from one polar molecule is attracted to the partially negative atoms in another molecule.


  3. The number of shells an atom has depends on what?the number of electrons it has.


  4. What is a molecule?Atoms held together by covalent bonds.


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


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