Acids and Alkalis Basics
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Questions and Answers

What is a common use of acids in food preservation?

  • To make food more nutritious
  • To add flavor to food
  • To add color to food
  • To prevent food from going bad (correct)
  • What is a characteristic of acidic solutions?

  • They conduct electricity (correct)
  • They insulate electricity
  • They are always colorless
  • They are good for the skin
  • What is a common use of alkalis in household cleaning?

  • To clean carpets
  • To add shine to mirrors
  • To remove grease from surfaces (correct)
  • To polish metal
  • What is a safety precaution when handling acids and alkalis in the laboratory?

    <p>Wear protective gear like goggles and gloves</p> Signup and view all the answers

    What is the purpose of reading hazard warning labels on reagent bottles?

    <p>To be aware of the chemical's potential hazards</p> Signup and view all the answers

    What is the first step in responding to an accident involving acids or alkalis?

    <p>Wash the affected area under slow running water</p> Signup and view all the answers

    What should you do if chemicals get into your eyes?

    <p>Wash it with the eye wash bottle immediately for at least 10 minutes</p> Signup and view all the answers

    What is the primary function of acid-alkali indicators?

    <p>To distinguish acids and alkalis</p> Signup and view all the answers

    What is the pH value that indicates a neutral substance?

    <p>pH 7</p> Signup and view all the answers

    What type of instrument can measure the pH value of a substance accurately to two decimal places?

    <p>pH meter</p> Signup and view all the answers

    What is the purpose of taking a sample of the acid or alkali to the hospital?

    <p>For reference</p> Signup and view all the answers

    What is the range of the pH scale?

    <p>0 to 14</p> Signup and view all the answers

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