Ionic Chemistry Exam Notes/QA

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LuminousNight
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239155
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Ionic Chemistry Exam Notes/QA
Updated:
2013-10-06 23:33:17
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Ionic Chem TOPS seventh
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The questions and answers for the Ionic Chemistry Exam at TOPS for the Seventh graders.
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  1. When do ionic bonds occur?
    When electrons transfer from one atom to another creating opposite charges that are highly attractive to each other.
  2. When do atoms form covalent bonds?
    When they share valence electrons.
  3. What is an ion?
    A charged atom.
  4. What is a Cation?
    A positively charged ion.
  5. What is a Anion?
    A negatively charged ion.
  6. What is an acid?
    An acid is any ionic compound that yields H+ in a solution.
  7. What is a base?
    A base is any ionic compound that accepts H+ (or yields OH-) in a solution.
  8. What is a salt?
    A salt is any ionic compound that neither yields nor accepts H+.
  9. What is an electrolyte?
    An electrolyte is any ionic compound (acid, base or salt) that conducts electricity.
  10. What is pH?
    Inverse log of H+ ion concentration, or logarithmic measurement of hydrogen ion concentration
  11. _________ refers to how much the flow of electricity is blocked.

    a. conductivity
    b. resistance
    resistance
  12. _________ refers to how much the flow of electricity is allowed to flow.

    a. conductivity
    b. resistance
    conductivity
  13. Rubbing alcohol is a good (resistor, conductor).

    a. resistor
    b. conductor
    resistor
  14. Gatorade is a good (resistor, conductor).

    a. resistor
    b. conductor
    conductor
  15. What is a VOM?
    Volt Ohm Meter
  16. What chemical in Red Cabbage is sensitive to changes in pH?
    Anthocyanin
  17. Draw a pH scale and label it.
  18. Why is pH 7 neutral?
    The concentration of H+ = OH-.
  19. What is the name of this liquid and identify it as an acid or a base.

    (NaOH)
    Sodium Hydroxide
  20. What is the name of this liquid and identify it as an acid or a base.

    (HCl)
    Hydrochloric Acid
  21. What relationships do adjacent pH have to each other?
    Between each pH, they have a difference of a power of ten (getting smaller or larger depending on where it is on the scale).
  22. Write out an Acid-Base equation.
    Acid + Base = Salt + Water
  23. What will the product be if Sodium Hydroxide reacts with Hydrochloric Acid?
    NaCl + H2O
  24. When using cabbage pH indicator, what color will it turn in an acid and what color will it turn in a base?
    Acid → Red

    Base → Blue/Green
  25. What important body system relies on electrolytes?
    The Nervous System
  26. What body system relies on acids for its function?
    The Digestive System
  27. What type of acid is used in batteries?
    Hydro-Sulfuric Acid
  28. Is coffee more acidic than Coca Cola?

    a. Yes
    b. No
    No
  29. Are soaps and detergents acids or bases?

    a. acid
    b. base
    base
  30. If 1000mls of a pH 5 is spilled, how many mls of a pH 9 will neutralize it?
    1000mls of a pH 9.
  31. If 1000mls of a pH 5 is spilled, how many mls of a pH 11 will neutralize it?
    10mls of a pH 11.

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