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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 980 · 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.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
  2. 2.True or false: plain water is neutral. (a) False (b) True
  3. 3.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  5. 5.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) a balloon (d) white paper strips
  7. 7.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  8. 8.⚖️ 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
  9. 9.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
  10. 10.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
  12. 12.🟡 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
  13. 13.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
  14. 14.🍋 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
  15. 15.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  16. 16.True or false: tamarind water is an acid. (a) True (b) False
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  18. 18.🫧 Which of these is an acid? (a) orange juice (b) salt water (c) sugar water (d) baking soda water
  19. 19.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  20. 20.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  21. 21.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) lemon juice (d) vinegar
  22. 22.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution
  23. 23.True or false: salt water is a base. (a) False (b) True
  24. 24.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) water (c) a magnet (d) yeast
  25. 25.⚖️ 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
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) water (d) a mirror
  27. 27.🧺 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) yeast
  28. 28.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a pulley (d) a prism
  30. 30.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  31. 31.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  32. 32.True or false: tamarind water is a base. (a) True (b) False
  33. 33.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  34. 34.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) white paper strips (c) water (d) lemon juice
  35. 35.🫧 Which of these is neutral? (a) curd (b) plain water (c) orange juice (d) baking soda water
  36. 36.🫧 Which of these is an acid? (a) lemon juice (b) sugar water (c) soap solution (d) baking soda water
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  38. 38.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
  39. 39.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  40. 40.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a magnet (d) soap solution

Answer key

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

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