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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 220 · 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 a base? (a) detergent water (b) tamarind water (c) lemon juice (d) curd
  2. 2.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
  3. 3.🛟 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
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the turmeric paper
  5. 5.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
  6. 6.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
  8. 8.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) lemon juice (d) plain water
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
  10. 10.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  11. 11.🫧 Which of these is an acid? (a) sugar water (b) detergent water (c) lemon juice (d) baking soda water
  12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
  13. 13.True or false: baking soda water is a base. (a) False (b) True
  14. 14.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
  16. 16.🫧 Which of these is an acid? (a) soap solution (b) curd (c) salt water (d) baking soda water
  17. 17.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the light we look in (c) the number of drops (d) the liquid we test
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  21. 21.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) an indicator (d) a pulley
  22. 22.🫧 Which of these is an acid? (a) detergent water (b) tamarind water (c) soap solution (d) salt water
  23. 23.True or false: soap solution is a base. (a) False (b) True
  24. 24.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
  25. 25.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) lemon juice (d) a mirror
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  27. 27.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  28. 28.True or false: sugar water is a base. (a) True (b) False
  29. 29.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  30. 30.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  32. 32.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
  33. 33.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) vinegar (d) detergent water
  34. 34.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  35. 35.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
  36. 36.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  37. 37.🫧 Which of these is an acid? (a) soap solution (b) orange juice (c) plain water (d) salt water
  38. 38.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) salt water (d) plain water
  39. 39.True or false: orange juice is neutral. (a) False (b) True
  40. 40.⚖️ 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

Answer key

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

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