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5 Written Questions

5 Matching Questions

  1. Difference between covalent and ionic bonds?
  2. Difference between compound and molecule?
  3. Are Van der Waals interactions weak or strong?
  4. What are trace elements?
  5. Do Hydrogen Bonds only occur with water molecules?
  1. a Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.
  2. b Weak.
  3. c No! Example: NH₃ (ammonia) is a hydrogen bond, the partial negative of Nitrogen bonds with the partial positive of Hydrogen.
  4. d Covalent bonds are the SHARING of electrons, whether it be equally or unequally
    Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING
  5. e Elements required by organisms in minute quantities; ex: humans need iodine in small quantities or we'll get goiter

5 Multiple Choice Questions

  1. a substance consisting of two or more different elements combined in a fixed ratio.
  2. One atom's attraction of the electrons within one covalently bonded molecule
    O > N > C > H
    Oxygen - most electronegative element
  3. Non-polar covalent bond; they have equal electronegativity so they share their e⁻
  4. Polar covalent bond.
    (it's when there's more than one polar molecule that hydrogen bonding takes place)
  5. Potential energy - stored energy due to location or structure; ready to use energy
    Kinetic energy - energy in motion or movement; currently using

5 True/False Questions

  1. Difference between an element and a compound?Covalent bonds are the SHARING of electrons, whether it be equally or unequally
    Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING

          

  2. What are the two strong chemical bonds?Atoms interacting with each other to share, take, or give electrons.

          

  3. 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

          

  4. How many electrons does it take to fill the first orbital shell? The second? The third?Polar covalent bond.
    (it's when there's more than one polar molecule that hydrogen bonding takes place)

          

  5. What is a chemical bond?Atoms interacting with each other to share, take, or give electrons.

          

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