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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 819 · 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.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
  2. 2.🧺 Which of these is needed for the turmeric test? (a) a comb (b) water (c) a balloon (d) a magnet
  3. 3.🔮 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
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) soap solution (d) a dropper or spoon
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the light we look in (d) the liquid we test
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
  7. 7.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) detergent water (d) curd
  8. 8.🫧 Which of these is a base? (a) vinegar (b) sugar water (c) detergent water (d) orange juice
  9. 9.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) lemon juice (d) soap solution
  10. 10.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) white paper strips (c) lemon juice (d) turmeric powder
  11. 11.🫧 Which of these is neutral? (a) vinegar (b) soap solution (c) salt water (d) curd
  12. 12.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  13. 13.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  14. 14.True or false: orange juice is an acid. (a) True (b) False
  15. 15.⚖️ 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
  16. 16.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  17. 17.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
  18. 18.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) vinegar (d) lemon juice
  19. 19.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  20. 20.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  21. 21.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  22. 22.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a comb (c) a dropper or spoon (d) water
  23. 23.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) detergent water (d) soap solution
  24. 24.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  25. 25.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  27. 27.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  28. 28.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
  29. 29.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a comb (d) soap solution
  30. 30.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) soap solution (d) detergent water
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
  32. 32.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
  33. 33.True or false: yeast is needed for the turmeric test. (a) True (b) False
  34. 34.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) detergent water (d) baking soda water
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) soap solution (d) a comb
  36. 36.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  37. 37.🫧 Which of these is neutral? (a) lemon juice (b) sugar water (c) detergent water (d) curd
  38. 38.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  39. 39.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) a mirror (d) a battery cell
  40. 40.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed

Answer key

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

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