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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 209 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  2. 2.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) a dropper or spoon (d) yeast
  3. 3.🫧 Which of these is a base? (a) sugar water (b) detergent water (c) orange juice (d) tamarind water
  4. 4.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a balloon (d) lemon juice
  7. 7.True or false: tamarind water is neutral. (a) True (b) False
  8. 8.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) bright blue (d) it stays white
  9. 9.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
  10. 10.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  11. 11.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the liquid we test (d) the light we look in
  13. 13.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
  14. 14.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) salt water
  15. 15.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) soap solution (d) a mirror
  16. 16.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
  17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) lemon juice (d) a mirror
  20. 20.🫧 Which of these is an acid? (a) salt water (b) plain water (c) soap solution (d) tamarind water
  21. 21.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  22. 22.True or false: salt water keeps turmeric yellow. (a) True (b) False
  23. 23.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  24. 24.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  25. 25.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  26. 26.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) turmeric powder (d) white paper strips
  28. 28.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  29. 29.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) soap solution (d) orange juice
  30. 30.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) lemon juice (c) turmeric powder (d) water
  32. 32.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  33. 33.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
  34. 34.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) lemon juice (d) sugar water
  35. 35.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a prism (d) a pulley
  36. 36.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
  37. 37.True or false: curd is neutral. (a) True (b) False
  38. 38.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
  39. 39.⚖️ 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
  40. 40.🫧 Which of these is an acid? (a) lemon juice (b) detergent water (c) soap solution (d) sugar water

Answer key

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

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