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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 59 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  2. 2.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
  3. 3.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  4. 4.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
  6. 6.⚖️ 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
  7. 7.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  8. 8.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  9. 9.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  10. 10.True or false: sugar water is an acid. (a) True (b) False
  11. 11.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) yeast (d) white paper strips
  12. 12.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  13. 13.True or false: soap solution is a base. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
  15. 15.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
  16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) a dropper or spoon (d) white paper strips
  17. 17.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  18. 18.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
  19. 19.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  20. 20.True or false: plain water is a base. (a) False (b) True
  21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) yeast (d) a dropper or spoon
  22. 22.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  23. 23.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  24. 24.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  25. 25.True or false: orange juice is an acid. (a) False (b) True
  26. 26.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.True or false: baking soda water is neutral. (a) True (b) False
  28. 28.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  30. 30.⚖️ 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
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  32. 32.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a prism (d) a pulley
  33. 33.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  34. 34.🧺 Which of these is not needed for the turmeric test? (a) water (b) yeast (c) soap solution (d) turmeric powder
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
  36. 36.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) tamarind water (d) baking soda water
  37. 37.True or false: detergent water is a base. (a) False (b) True
  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 stays yellow (d) it turns green
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False

Answer key

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

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