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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 91 · 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 is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
  2. 2.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
  4. 4.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  5. 5.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
  6. 6.True or false: baking soda water is neutral. (a) True (b) False
  7. 7.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  8. 8.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) a mirror (d) turmeric powder
  9. 9.🔮 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
  10. 10.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  11. 11.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) curd (d) salt water
  12. 12.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) yeast (c) a mirror (d) a magnet
  13. 13.True or false: curd is a base. (a) True (b) False
  14. 14.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green
  16. 16.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  17. 17.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  19. 19.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  20. 20.⚖️ 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 keep it the same (c) we measure it
  21. 21.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  22. 22.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) lemon juice (d) plain water
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  24. 24.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  25. 25.True or false: tamarind water is an acid. (a) True (b) False
  26. 26.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  27. 27.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  28. 28.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the number of drops (d) the colour we see
  30. 30.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  31. 31.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a comb (c) a battery cell (d) a balloon
  32. 32.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) soap solution (d) water
  34. 34.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  35. 35.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  37. 37.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  38. 38.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) soap solution (d) a balloon
  40. 40.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True

Answer key

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

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