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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 80 · 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.

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

Answer key

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

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