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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 547 · 40 questions
TalentJR

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

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  1. 1.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  2. 2.True or false: plain water keeps turmeric yellow. (a) True (b) False
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
  4. 4.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  5. 5.True or false: sugar water is a base. (a) False (b) True
  6. 6.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  7. 7.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
  8. 8.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) vinegar
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
  10. 10.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) soap solution (d) detergent water
  11. 11.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) turmeric powder (d) a battery cell
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the light we look in
  13. 13.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  14. 14.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) detergent water (c) salt water (d) tamarind water
  15. 15.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  17. 17.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) a pulley (d) an indicator
  18. 18.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) vinegar (d) sugar water
  19. 19.True or false: detergent water is neutral. (a) False (b) True
  20. 20.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  21. 21.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  22. 22.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the number of drops
  24. 24.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) yeast (d) soap solution
  26. 26.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a dropper or spoon (d) a battery cell
  29. 29.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) vinegar (d) baking soda water
  30. 30.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) plain water (d) baking soda water
  31. 31.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
  32. 32.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  33. 33.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
  34. 34.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a battery cell (d) a dropper or spoon
  35. 35.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
  36. 36.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) turmeric powder (d) a mirror
  37. 37.True or false: vinegar is an acid. (a) True (b) False
  38. 38.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  39. 39.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) plain water (d) baking soda water
  40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once

Answer key

  1. not needed
  2. True
  3. we keep it the same
  4. needed
  5. False
  6. an acid
  7. soap solution
  8. vinegar
  9. we change it
  10. sugar water
  11. a battery cell
  12. the liquid we test
  13. turns reddish-brown
  14. detergent water
  15. not needed
  16. False
  17. an indicator
  18. soap solution
  19. False
  20. True
  21. False
  22. stays yellow
  23. the colour we see
  24. reddish-brown
  25. yeast
  26. soap solution
  27. False
  28. a battery cell
  29. baking soda water
  30. baking soda water
  31. use only kitchen items
  32. an acid
  33. lemon juice
  34. a dropper or spoon
  35. vinegar
  36. turmeric powder
  37. True
  38. not needed
  39. plain water
  40. reddish

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