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5 Written questions

5 Matching questions

  1. What is a chemical reactions?
  2. What is a radioactive isotope?
  3. How many electrons can the 2nd and 3rd shell of an atom hold?
  4. What is an ionic compound?
  5. The tendency of water molecules to stick to each other is called
  1. a up to 8 electrons.
  2. b cohesion
  3. c is one in which the nucleus decays, giving off particles of energy.
  4. d A compound held together by ionic bonds.
  5. e Changes is the chemical compound of matter.

5 Multiple choice questions

  1. Atoms held together by covalent bonds.
  2. 2.
  3. The sum of the number of protons and neutrons in its nucleus.
  4. Oxygen, carbon, hydrogen, and nitrogen.
  5. Ionic

5 True/False questions

  1. What is the atomic number?The attraction btwn opposite charged ions.


  2. What is a neutron?an electronically neutral subatomic particle.


  3. What is an electron?A subatomic particle w/ a negative charge.


  4. Which part of the atom has the most energy?The outer shell.


  5. What primarily determines how an atom behaves?Electrons.


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