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5 Written questions

5 Matching questions

  1. What is a radioactive isotope?
  2. What are the 4 most abundant elements in living cells?
  3. What is the atomic number?
  4. What physical states is matter found in?
  5. What is a chemical reactions?
  1. a Changes is the chemical compound of matter.
  2. b Solid
  3. c Oxygen, carbon, hydrogen, and nitrogen.
  4. d The number of protons in an atom.
  5. e is one in which the nucleus decays, giving off particles of energy.

5 Multiple choice questions

  1. A subatomic particle w/ a negative charge.
  2. 2.
  3. cohesion
  4. The sum of the number of protons and neutrons in its nucleus.
  5. Atoms held together by covalent bonds.

5 True/False questions

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


  2. What makes up the nucleus?Atoms held together by covalent bonds.


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


  4. What is an atom?an electronically neutral subatomic particle.


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