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5 Written questions

5 Matching questions

  1. What is an element?
  2. What are isotopes?
  3. What is an ion?
  4. What is a compound?
  5. What are valence electrons?
  1. a Atoms that lose or gain electrons to complete their outer shell
  2. b The electrons on the outermost orbital shell
  3. c 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
  4. d a substance consisting of two or more different elements combined in a fixed ratio.
  5. e A substance that cannot be broken down to other substances by chemical reactions.

5 Multiple choice questions

  1. The sharing of electrons EQUALLY; atoms have similar electronegativities
  2. The sharing of electrons UNEQUALLY; atoms have differing electronegativities
  3. Covalent bonds are the SHARING of electrons, whether it be equally or unequally
    Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING
  4. Potential energy - stored energy due to location or structure; ready to use energy
    Kinetic energy - energy in motion or movement; currently using
  5. Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms

5 True/False questions

  1. What bond do two oxygen's share?The sharing of electrons UNEQUALLY; atoms have differing electronegativities

          

  2. What is a hydrogen bond? Strong or weak?Partial plus of a Hydrogen in a polar molecule forms a bond with a Partial Minus of another polar molecule; Weak bond.

          

  3. What is a chemical bond?a substance consisting of two or more different elements combined in a fixed ratio.

          

  4. Do Hydrogen Bonds only occur with water molecules?Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.

          

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