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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 784 · 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.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
  3. 3.🫧 Which of these is neutral? (a) curd (b) lemon juice (c) salt water (d) vinegar
  4. 4.True or false: a magnet is needed for the turmeric test. (a) False (b) True
  5. 5.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) soap solution (d) white paper strips
  7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) a comb (d) soap solution
  8. 8.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a comb (d) white paper strips
  9. 9.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
  10. 10.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  11. 11.True or false: salt water is neutral. (a) True (b) False
  12. 12.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  13. 13.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  14. 14.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) soap solution (d) orange juice
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
  16. 16.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  17. 17.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  18. 18.True or false: plain water is neutral. (a) False (b) True
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
  21. 21.⚖️ 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
  22. 22.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  23. 23.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
  24. 24.True or false: vinegar is an acid. (a) False (b) True
  25. 25.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  26. 26.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  27. 27.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  28. 28.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
  29. 29.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  30. 30.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
  31. 31.⚖️ 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
  32. 32.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) sugar water (d) plain water
  33. 33.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  34. 34.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
  35. 35.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) sugar water (d) baking soda water
  36. 36.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) water (d) yeast
  38. 38.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  40. 40.🫧 Which of these is an acid? (a) vinegar (b) detergent water (c) salt water (d) baking soda water

Answer key

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

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