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5 Written questions

5 Matching questions

  1. The number of covalent bonds an atom can form is equal to what?
  2. What is the atomic number?
  3. What is a molecule?
  4. What is an electron?
  5. What is mass?
  1. a Atoms held together by covalent bonds.
  2. b The number of additional electrons needed to fill its outer shell.
  3. c The number of protons in an atom.
  4. d A subatomic particle w/ a negative charge.
  5. e The sum of the number of protons and neutrons in its nucleus.

5 Multiple choice questions

  1. up to 8 electrons.
  2. 25.
  3. Changes is the chemical compound of matter.
  4. the atomic number.
  5. is one in which the nucleus decays, giving off particles of energy.

5 True/False questions

  1. What are elements?Elements that exist in different forms
    Forms of an element that differ in mass
    Same num of protons and electrons but diff num of neutrons


  2. What is a hydrogen bond?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 primarily determines how an atom behaves?the atomic number.


  5. The tendency of water molecules to stick to each other is calledthe number of electrons it has.