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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 851 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) turmeric powder (c) lemon juice (d) soap solution
  2. 2.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
  4. 4.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
  5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
  6. 6.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) detergent water (d) plain water
  7. 7.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) baking soda water (d) detergent water
  8. 8.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  9. 9.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the light we look in
  11. 11.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) white paper strips (c) a balloon (d) turmeric powder
  12. 12.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
  13. 13.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
  14. 14.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
  15. 15.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  16. 16.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  17. 17.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  18. 18.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
  19. 19.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) baking soda water (d) tamarind water
  20. 20.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  21. 21.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
  22. 22.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a mirror (d) lemon juice
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) soap solution (d) a balloon
  25. 25.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  26. 26.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  27. 27.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  28. 28.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) baking soda water (d) soap solution
  29. 29.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  30. 30.🫧 Which of these is neutral? (a) lemon juice (b) detergent water (c) baking soda water (d) salt water
  31. 31.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  32. 32.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) soap solution (d) salt water
  33. 33.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) detergent water (d) soap solution
  34. 34.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  35. 35.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
  36. 36.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
  37. 37.🫧 Which of these is a base? (a) detergent water (b) vinegar (c) orange juice (d) tamarind water
  38. 38.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) a magnet (d) water
  39. 39.🫧 Which of these is a base? (a) lemon juice (b) salt water (c) plain water (d) soap solution
  40. 40.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow

Answer key

  1. a comb
  2. True
  3. the liquid we test
  4. use only kitchen items
  5. reddish
  6. detergent water
  7. vinegar
  8. a base
  9. False
  10. the colour we see
  11. a balloon
  12. sugar water
  13. it turns yellow again
  14. an indicator
  15. needed
  16. turns reddish-brown
  17. needed
  18. salt water
  19. tamarind water
  20. stays yellow
  21. soap water is a base
  22. an acid
  23. a mirror
  24. a balloon
  25. False
  26. False
  27. an acid
  28. plain water
  29. not needed
  30. salt water
  31. False
  32. soap solution
  33. vinegar
  34. True
  35. reddish-brown
  36. it stays yellow
  37. detergent water
  38. water
  39. soap solution
  40. stays yellow

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