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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 936 · 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.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  2. 2.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  3. 3.⚖️ 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
  4. 4.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  7. 7.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) lemon juice (d) detergent water
  8. 8.True or false: lemon juice is a base. (a) True (b) False
  9. 9.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  10. 10.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  11. 11.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
  12. 12.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  14. 14.True or false: plain water keeps turmeric yellow. (a) False (b) True
  15. 15.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a battery cell (d) soap solution
  16. 16.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) lemon juice (d) baking soda water
  17. 17.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) yeast (c) turmeric powder (d) soap solution
  19. 19.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  20. 20.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) an indicator (d) a pulley
  21. 21.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  22. 22.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a mirror (c) lemon juice (d) soap solution
  24. 24.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) plain water (d) soap solution
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  26. 26.🫧 Which of these is neutral? (a) lemon juice (b) vinegar (c) plain water (d) tamarind water
  27. 27.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a comb (c) water (d) soap solution
  28. 28.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  29. 29.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) baking soda water (d) lemon juice
  30. 30.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  31. 31.⚖️ 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 colour we see (c) the light we look in (d) the turmeric paper
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a battery cell (d) soap solution
  33. 33.⚖️ 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
  34. 34.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
  35. 35.🧺 Which of these is needed for the turmeric test? (a) yeast (b) water (c) a battery cell (d) a mirror
  36. 36.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) water (d) a comb
  38. 38.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
  39. 39.🫧 Which of these is a base? (a) sugar water (b) baking soda water (c) vinegar (d) plain water
  40. 40.True or false: white paper strips is needed for the turmeric test. (a) True (b) False

Answer key

  1. neutral
  2. True
  3. False
  4. an old shirt or apron
  5. True
  6. we measure it
  7. detergent water
  8. False
  9. an acid
  10. False
  11. tamarind water
  12. an acid
  13. it stays yellow
  14. True
  15. soap solution
  16. lemon juice
  17. True
  18. yeast
  19. neutral
  20. an indicator
  21. True
  22. not needed
  23. a mirror
  24. soap solution
  25. False
  26. plain water
  27. a comb
  28. True
  29. baking soda water
  30. stays yellow
  31. the liquid we test
  32. a battery cell
  33. we change it
  34. use only kitchen items
  35. water
  36. True
  37. a comb
  38. lemon juice
  39. baking soda water
  40. True

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