The "Base"Ics Of pH

10 Questions | Total Attempts: 128

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PH Scale Quizzes & Trivia

This quis was designed to test your knowledge of the South Caroline Seventh grade Science standards on pH.


Questions and Answers
  • 1. 
    ____________ are substances that have a sour taste, are corrosive to metals, and have a pH less than 7.
    • A. 

      Acids

    • B. 

      Bases

    • C. 

      Neutrals

    • D. 

      Solutions

  • 2. 
    ________ are substances that have a bitter taste, a slippery feel, and a pH greater than 7.
    • A. 

      Acids

    • B. 

      Bases

    • C. 

      Neutrals

    • D. 

      Solutions

  • 3. 
    A substance is determined to have a pH of 3. This substance must be a(n) ________.
    • A. 

      Acid

    • B. 

      Base

    • C. 

      Neutral

    • D. 

      Solution

  • 4. 
    Frederick tests the pH of an unidentified substance and finds its pH to be 11. This substance must be a(n) ________.
    • A. 

      Acid

    • B. 

      Base

    • C. 

      Neutral

    • D. 

      Solution

  • 5. 
    Pure water is a ________ because it has a pH of 7.
    • A. 

      Acid

    • B. 

      Base

    • C. 

      Neutral

    • D. 

      Solution

  • 6. 
    A student uses blue litmus paper to determine the relative pH of a substance. The litmus paper turns red when it comes in contact with the substance. The student can determine that this substance is a(n) ________.
    • A. 

      Acid

    • B. 

      Base

    • C. 

      Neutral

    • D. 

      Solution

  • 7. 
    A student determines that a solution is an acid after using litmus paper in the solution. The litmus paper must have turned what color in order for the students to draw this conclusion?
    • A. 

      Blue

    • B. 

      Magenta

    • C. 

      Orange

    • D. 

      Red

  • 8. 
    A student determines that a substance must be either a neutral or an acid after using phenolphthalein as an indicator. The phenolphthalein must have done what in the presence of the solution?
    • A. 

      The phenolphthalien turned red.

    • B. 

      The phenolophthalein turned magenta.

    • C. 

      The phenolphthalien remained blue.

    • D. 

      The phenolphthalein remained clear.

  • 9. 
    Phenolphthalein turns bright magenta in the presence of an unknown substance. The substance must be a ______________.
    • A. 

      Strong acid

    • B. 

      Strong base

    • C. 

      Weak acid

    • D. 

      Weak base

  • 10. 
    The closer a substance's pH is to 7 the _________ the pH of the substance is.
    • A. 

      Heavier

    • B. 

      Lighter

    • C. 

      Stronger

    • D. 

      Weaker

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