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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 773 · 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 needed for the turmeric test? (a) a balloon (b) a comb (c) lemon juice (d) a mirror
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
  3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
  4. 4.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
  5. 5.True or false: sugar water is a base. (a) False (b) True
  6. 6.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) a battery cell (d) water
  7. 7.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) soap solution (d) a balloon
  8. 8.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  9. 9.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  10. 10.🟡 Which of these keeps turmeric yellow? (a) plain water (b) baking soda water (c) soap solution (d) detergent water
  11. 11.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  13. 13.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  15. 15.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  16. 16.True or false: curd is an acid. (a) False (b) True
  17. 17.True or false: soap solution is a base. (a) True (b) False
  18. 18.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
  19. 19.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a battery cell (d) turmeric powder
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  21. 21.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
  22. 22.📘 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
  23. 23.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  24. 24.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  25. 25.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  27. 27.🫧 Which of these is an acid? (a) curd (b) soap solution (c) sugar water (d) salt water
  28. 28.🔮 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
  29. 29.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  30. 30.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
  31. 31.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) sugar water (d) baking soda water
  32. 32.⚖️ 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
  33. 33.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  34. 34.🧺 Which of these is not needed for the turmeric test? (a) water (b) a mirror (c) lemon juice (d) a dropper or spoon
  35. 35.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  36. 36.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) yeast (d) a dropper or spoon
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
  40. 40.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed

Answer key

  1. lemon juice
  2. False
  3. reddish-brown
  4. lemon juice
  5. False
  6. water
  7. a balloon
  8. needed
  9. stays yellow
  10. plain water
  11. an old shirt or apron
  12. False
  13. vinegar
  14. True
  15. False
  16. True
  17. True
  18. tamarind water
  19. a battery cell
  20. True
  21. sugar water
  22. an indicator
  23. True
  24. an acid
  25. an acid
  26. it stays yellow
  27. curd
  28. reddish
  29. True
  30. False
  31. baking soda water
  32. True
  33. stays yellow
  34. a mirror
  35. needed
  36. True
  37. the light we look in
  38. yeast
  39. the number of drops
  40. needed

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