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5 Written questions

5 Matching questions

  1. How many electrons can the inner shell of an atom hold?
  2. What are the 4 most abundant elements in living cells?
  3. What is a covalent bond?
  4. What is an atom?
  5. What is a chemical reactions?
  1. a 2.
  2. b Changes is the chemical compound of matter.
  3. c The smallest unit of matter that still retains the properties of an element.
  4. d Forms when 2 atoms share 1 or more pairs of outer shell electrons and forms a 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. A subatomic particle w/ a negative charge.
  3. Electrons.
  4. the atomic number.
  5. Ionic

5 True/False questions

  1. What physical states is matter found in?Solid


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


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


  4. What is ion?The sum of the number of protons and neutrons in its nucleus.


  5. What is an ionic bond?A compound held together by ionic bonds.


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