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5 Written questions

5 Matching questions

  1. Difference between covalent and ionic bonds?
  2. What are polar covalent bonds?
  3. What is a chemical reaction? Be able to identify the products and reactants in a chemical reaction.
  4. What is a compound?
  5. What is an ion?
  1. a 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. b Atoms that lose or gain electrons to complete their outer shell
  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 The sharing of electrons UNEQUALLY; atoms have differing electronegativities
  5. e a substance consisting of two or more different elements combined in a fixed ratio.

5 Multiple choice questions

  1. No! Example: NH₃ (ammonia) is a hydrogen bond, the partial negative of Nitrogen bonds with the partial positive of Hydrogen.
  2. Partial plus of a Hydrogen in a polar molecule forms a bond with a Partial Minus of another polar molecule; Weak bond.
  3. Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms
  4. Weak.
  5. Non-polar covalent bond; they have equal electronegativity so they share their e⁻

5 True/False questions

  1. What's a positive ion called? A negative ion?One atom's attraction of the electrons within one covalently bonded molecule
    O > N > C > H
    Oxygen - most electronegative element

          

  2. What is electronegativity?One atom's attraction of the electrons within one covalently bonded molecule
    O > N > C > H
    Oxygen - most electronegative element

          

  3. Difference between compound and molecule?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 a chemical bond?a substance consisting of two or more different elements combined in a fixed ratio.

          

  5. Choose 2 elements essential to life, draw the electron configuration of each as an ion and note the charge of the ion.Ex: O - only 6 rings on outer shell, so it wants to gain 2, making it 2- charge

          

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