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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 797 · 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.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a magnet (d) yeast
  2. 2.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
  4. 4.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  6. 6.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) plain water (c) lemon juice (d) sugar water
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
  8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  9. 9.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  10. 10.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
  11. 11.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the light we look in
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) water (d) soap solution
  14. 14.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  15. 15.True or false: sugar water is neutral. (a) False (b) True
  16. 16.⚖️ 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
  17. 17.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  18. 18.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  19. 19.True or false: orange juice is an acid. (a) False (b) True
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
  21. 21.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
  23. 23.True or false: lemon juice is neutral. (a) False (b) True
  24. 24.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  25. 25.True or false: a comb is needed for the turmeric test. (a) False (b) True
  26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
  27. 27.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  28. 28.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  30. 30.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
  32. 32.🫧 Which of these is neutral? (a) vinegar (b) baking soda water (c) salt water (d) curd
  33. 33.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  34. 34.True or false: plain water keeps turmeric yellow. (a) True (b) False
  35. 35.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) plain water (c) lemon juice (d) vinegar
  36. 36.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  37. 37.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  38. 38.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a balloon (d) a dropper or spoon
  40. 40.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red

Answer key

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

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