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5 Written questions

5 Matching questions

  1. What are isotopes?
  2. What is a hydrogen bond? Strong or weak?
  3. What is a chemical bond?
  4. What are ionic bonds?
  5. What is a molecule?
  1. a Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms
  2. b Atoms interacting with each other to share, take, or give electrons.
  3. c 2 or more atoms held together by covalent bonds
  4. d Different forms of the same element; they differ in number of neutrons, but they have the same # of protons and behave identically in chemical reactions
  5. e Partial plus of a Hydrogen in a polar molecule forms a bond with a Partial Minus of another polar molecule; Weak bond.

5 Multiple choice questions

  1. The making and breaking of chemical bonds.
    1. Reactants - structure of chemicals prior to a chemical reaction
    2. Reaction
    3. Products - structure of chemicals as a result of a chemical reaction
  2. Covalent bonds are the SHARING of electrons, whether it be equally or unequally
    Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING
  3. Positive ion = CATION
    Negative ion = ANION
  4. The sharing of electrons UNEQUALLY; atoms have differing electronegativities
  5. Covalent bonds (STRONGEST) and Ionic bonds.

5 True/False questions

  1. Are Van der Waals interactions weak or strong?The electrons on the outermost orbital shell


  2. What is the atomic number?The number of protons and neutrons in nucleus.


  3. How many electrons does it take to fill the first orbital shell? The second? The third?First shell - 2
    Second shell - 8
    Third shell - 8


  4. What is electronegativity?A substance that cannot be broken down to other substances by chemical reactions.


  5. What is the atomic mass?The number of protons in an atom.