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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 906 · 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 turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) vinegar (d) soap solution
  2. 2.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  3. 3.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  4. 4.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) tamarind water (d) baking soda water
  5. 5.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) white paper strips (d) a mirror
  6. 6.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a magnet (d) a pulley
  7. 7.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
  8. 8.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
  10. 10.True or false: water is needed for the turmeric test. (a) False (b) True
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) water (d) a comb
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  13. 13.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  14. 14.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  15. 15.True or false: lemon juice is a base. (a) False (b) True
  16. 16.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  17. 17.True or false: salt water is neutral. (a) True (b) False
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
  19. 19.True or false: plain water is an acid. (a) False (b) True
  20. 20.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
  21. 21.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  22. 22.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) salt water (b) tamarind water (c) lemon juice (d) baking soda water
  24. 24.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  25. 25.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  26. 26.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  27. 27.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  28. 28.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
  29. 29.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  30. 30.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  31. 31.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) turmeric powder (d) lemon juice
  33. 33.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) turmeric powder (c) soap solution (d) a dropper or spoon
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  35. 35.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) detergent water (d) lemon juice
  37. 37.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  38. 38.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  39. 39.True or false: sugar water is neutral. (a) True (b) False
  40. 40.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a magnet (c) water (d) soap solution

Answer key

  1. soap solution
  2. turns reddish-brown
  3. a base
  4. tamarind water
  5. white paper strips
  6. an indicator
  7. use only kitchen items
  8. True
  9. reddish-brown
  10. True
  11. a comb
  12. we keep it the same
  13. True
  14. an acid
  15. False
  16. False
  17. True
  18. we keep it the same
  19. False
  20. reddish-brown
  21. True
  22. False
  23. baking soda water
  24. True
  25. True
  26. neutral
  27. not needed
  28. soap water is a base
  29. True
  30. needed
  31. an acid
  32. a magnet
  33. yeast
  34. we change it
  35. False
  36. detergent water
  37. True
  38. needed
  39. True
  40. a magnet

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