Inferring From Evidence: Acids And Bases! Trivia Quiz

13 Questions | Total Attempts: 69

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Evidence Quizzes & Trivia

A quiz to get students using the evidence provided to make inferences about acid and base questions


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Questions and Answers
  • 1. 
    [The next few questions require foreknowledge about: pH and universal indicator. If you have never used universal indicator solution, look it up before continuing]We test the pH of lemon juice with universal indicator solution, and it turns a red colour. What can we INFER (figure out/deduce) about lemon juice?
    • A. 

      It is an alkalai

    • B. 

      It is an acid

    • C. 

      It is a base

    • D. 

      It turns universal indicator red

    • E. 

      Red is the colour of lemon juice

  • 2. 
    We test orange juice in the lab using universal indicator. What might we OBSERVE?
    • A. 

      That orange juice turns universal indicator solution red

    • B. 

      That orange juice is an acid

    • C. 

      That orange juice is pH neutral

    • D. 

      That orange juice turns universal indicator solution light green

  • 3. 
    Water is a substance that is known to have a pH of around 7. The word for this is...
    • A. 

      Neural

    • B. 

      Neutron

    • C. 

      Neutral

    • D. 

      Neutralisation

  • 4. 
    What colour would universal indicator turn if it was added to pure water? (OBSERVATION)
    • A. 

      Orange

    • B. 

      Blue

    • C. 

      Red

    • D. 

      Light green

  • 5. 
    What would the colour universal indicator turns when added to pure water tell us about a property of water? (INFERENCE)
    • A. 

      Water is an acid

    • B. 

      Water is a neutral substance

    • C. 

      Water is weakly acidic

  • 6. 
    Some students mixed hydrochloric acid (HCL) and the base sodium hydroxide (NaOH) together. The added universal indicator to the resulting mixture and it turned light green. What can they infer about what happens when an acid is added to a base from this experiment?
    • A. 

      That acids and bases turn universal indicator light green

    • B. 

      That acids and bases react together to form a new substance or substances that are neutral

    • C. 

      That acids and bases don't react chemically

  • 7. 
    Some students mixed hydrochloric acid (HCL) and the base sodium hydroxide (NaOH) together. The added universal indicator to the resulting mixture and it turned light green. They then took that resulting mixture and poured it into an evaporating dish. They evaporated all the water and were left with a white substance that looked like crystalised table salt.Their teacher confirmed the white substance was table salt.Which word equation accurately represents the chemical reaction above (hint: evaporation is NOT a chemical reaction, is is a method of separating two substances)
    • A. 

      Hydrochloric acid + sodium hydroxide --------> water + sodium chloride

    • B. 

      Salt water --------> water + sodium chloride

    • C. 

      Hydrochloric acid + sodium hydroxide --------> salt water

    • D. 

      Sodium chloride + water --------> acid + base

  • 8. 
    If a substance caused your skin to sting, what could you infer about it? (Choose the BEST answer)
    • A. 

      It could be a base

    • B. 

      It could be an acid

    • C. 

      It could be a weak acid or weak base

    • D. 

      It could be a strong acid or strong base

  • 9. 
    If you spilt an acid on your hand in Science class, what should you do?NOTE: always report accidents/spills involving acids/breakages to your teacher.
    • A. 

      Get the teacher to put a weaker acid such as vinegar on your hand

    • B. 

      Get the teacher to put a weaker acid such as baking soda on your hand

    • C. 

      Get the teacher to put a weak base such as baking soda on your hand

    • D. 

      Get the teacher to put a weak base such as vinegar on your hand

  • 10. 
    Why does putting baking soda on a bee sting help to ease the pain?
    • A. 

      Because baking soda soothes the wound; bee stings are basic and strong bases can hurt

    • B. 

      Because baking soda is a base, the bee sting is acidic, and the two neutralise. The pain partly comes from the acidic property of the bee sting

  • 11. 
    Which of these is a list of WEAK acids? (Here I am defining 'weak' as 'won't damage your skin if you leave it on for a few minutes)
    • A. 

      Lemon juice, coca cola, vinegar, lime juice

    • B. 

      Lemon juice, battery acid, vinegar, stomach acid (HCl)

    • C. 

      Orange juice, battery acid, stomach acid

    • D. 

      Water, lemon juice, salt water

  • 12. 
    Some acid-base neutralisation reactions produce carbon dioxide (a gas). Think back to experiments you have done in class and decide which of these might be producing carbon dioxide....
    • A. 

      Lemon juice and baking soda

    • B. 

      Vinegar and lemon juice

    • C. 

      Vinegar and baking soda

  • 13. 
    A substance was tested in the lab with universal indicator and turned it deep blue. What can we infer about this substance?
    • A. 

      It is an acid

    • B. 

      It is a weak base (about pH 8)

    • C. 

      It is a strong base

    • D. 

      It is a neutral substance

    • E. 

      It is a very strong acid (pH 1)