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5 Written Questions

5 Matching Questions

  1. Are Van der Waals interactions weak or strong?
  2. What is electronegativity?
  3. What is an element?
  4. What is a molecule?
  5. What is a chemical reaction? Be able to identify the products and reactants in a chemical reaction.
  1. a 2 or more atoms held together by covalent bonds
  2. b One atom's attraction of the electrons within one covalently bonded molecule
    O > N > C > H
    Oxygen - most electronegative element
  3. c 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
  4. d Weak.
  5. e A substance that cannot be broken down to other substances by chemical reactions.

5 Multiple Choice Questions

  1. Two or more atoms SHARING ELECTRONS.
    Single covalent bonds - sharing of one pair of valence electrons
    Double - sharing of two pairs of valence electrons
  2. Non-polar covalent bond; they have equal electronegativity so they share their e⁻
  3. The sharing of electrons UNEQUALLY; atoms have differing electronegativities
  4. Elements required by organisms in minute quantities; ex: humans need iodine in small quantities or we'll get goiter
  5. Partial plus of a Hydrogen in a polar molecule forms a bond with a Partial Minus of another polar molecule; Weak bond.

5 True/False Questions

  1. What are ionic bonds?Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms


  2. Define Subatomic particles, their charges, where they're found, and their relative mass.Potential energy - stored energy due to location or structure; ready to use energy
    Kinetic energy - energy in motion or movement; currently using


  3. Difference between covalent and ionic bonds?Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.


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


  5. What is matter?Anything that takes up space and has mass. Ex: Air; something that isn't matter: light (think of the filling up a balloon metaphor)


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