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Turmeric Indicator Experiment Worksheet

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

Answer key

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

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