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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 164 · 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.True or false: detergent water is an acid. (a) False (b) True
  2. 2.⚖️ 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
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the number of drops (d) the colour we see
  4. 4.⚖️ 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
  5. 5.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  6. 6.True or false: sugar water is neutral. (a) False (b) True
  7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
  8. 8.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) plain water (d) baking soda water
  9. 9.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  10. 10.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) water (d) a magnet
  11. 11.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  12. 12.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  13. 13.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  14. 14.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) turmeric powder (d) a dropper or spoon
  16. 16.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a balloon (d) soap solution
  17. 17.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
  18. 18.🫧 Which of these is a base? (a) lemon juice (b) tamarind water (c) soap solution (d) curd
  19. 19.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  20. 20.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) salt water (d) sugar water
  21. 21.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
  23. 23.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  25. 25.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  26. 26.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  28. 28.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  29. 29.True or false: soap solution is a base. (a) True (b) False
  30. 30.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  31. 31.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  33. 33.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  36. 36.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  37. 37.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
  38. 38.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
  39. 39.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  40. 40.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) soap solution (d) a balloon

Answer key

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

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