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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 486 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) white paper strips (d) a battery cell
  2. 2.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a balloon (d) yeast
  3. 3.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a dropper or spoon (d) yeast
  5. 5.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
  6. 6.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
  7. 7.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  9. 9.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) an indicator (d) a prism
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a magnet (d) lemon juice
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the number of drops (d) the colour we see
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the colour we see (d) the turmeric paper
  14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a balloon (c) white paper strips (d) water
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  16. 16.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  17. 17.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  18. 18.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  19. 19.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
  20. 20.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  21. 21.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  22. 22.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  23. 23.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) white paper strips (d) a comb
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  26. 26.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) white paper strips (c) yeast (d) a mirror
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  28. 28.True or false: plain water is an acid. (a) False (b) True
  29. 29.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  30. 30.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
  31. 31.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  32. 32.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  33. 33.True or false: lemon juice is an acid. (a) False (b) True
  34. 34.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) lemon juice
  35. 35.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
  36. 36.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  37. 37.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  38. 38.True or false: orange juice is neutral. (a) False (b) True
  39. 39.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  40. 40.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True

Answer key

  1. a battery cell
  2. turmeric powder
  3. vinegar
  4. yeast
  5. reddish-brown
  6. False
  7. soap solution
  8. we keep it the same
  9. an indicator
  10. a magnet
  11. False
  12. the liquid we test
  13. the colour we see
  14. a balloon
  15. we keep it the same
  16. needed
  17. True
  18. False
  19. True
  20. True
  21. True
  22. False
  23. neutral
  24. a comb
  25. we change it
  26. white paper strips
  27. True
  28. False
  29. needed
  30. reddish-brown
  31. True
  32. needed
  33. True
  34. soap solution
  35. reddish
  36. not needed
  37. an acid
  38. False
  39. not needed
  40. False

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