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Turmeric Indicator Experiment Worksheet

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

Answer key

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

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