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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 483 · 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.True or false: water is not needed for the turmeric test. (a) True (b) False
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) soap solution (d) white paper strips
  3. 3.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  4. 4.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) turmeric powder (d) a mirror
  5. 5.🫧 Which of these is a base? (a) tamarind water (b) vinegar (c) curd (d) detergent water
  6. 6.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  7. 7.True or false: water is needed for the turmeric test. (a) True (b) False
  8. 8.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  9. 9.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  10. 10.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  11. 11.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  12. 12.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
  13. 13.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
  14. 14.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) soap solution
  15. 15.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
  16. 16.True or false: a comb is needed for the turmeric test. (a) True (b) False
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) water (d) a magnet
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) a magnet (d) turmeric powder
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
  22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a battery cell (d) white paper strips
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  24. 24.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  25. 25.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) lemon juice (c) soap solution (d) water
  27. 27.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) sugar water (d) salt water
  28. 28.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  29. 29.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) lemon juice (d) salt water
  30. 30.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  31. 31.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) salt water (d) soap solution
  32. 32.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
  33. 33.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  34. 34.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) vinegar (c) baking soda water (d) detergent water
  35. 35.🫧 Which of these is a base? (a) curd (b) soap solution (c) lemon juice (d) plain water
  36. 36.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  37. 37.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
  38. 38.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) yeast (d) soap solution
  39. 39.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
  40. 40.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution

Answer key

  1. False
  2. a comb
  3. needed
  4. turmeric powder
  5. detergent water
  6. neutral
  7. True
  8. True
  9. False
  10. True
  11. False
  12. an old shirt or apron
  13. lemon juice
  14. soap solution
  15. salt water
  16. False
  17. we keep it the same
  18. True
  19. water
  20. a magnet
  21. the number of drops
  22. a battery cell
  23. False
  24. not needed
  25. True
  26. a comb
  27. baking soda water
  28. False
  29. lemon juice
  30. False
  31. soap solution
  32. it stays yellow
  33. needed
  34. vinegar
  35. soap solution
  36. False
  37. reddish
  38. soap solution
  39. an indicator
  40. tamarind water

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