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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 154 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
  2. 2.⚖️ 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
  3. 3.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  4. 4.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) soap solution (c) tamarind water (d) vinegar
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
  6. 6.⚖️ 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
  7. 7.True or false: sugar water is an acid. (a) True (b) False
  8. 8.⚖️ 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
  9. 9.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  10. 10.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  11. 11.🫧 Which of these is a base? (a) tamarind water (b) orange juice (c) soap solution (d) sugar water
  12. 12.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) salt water (d) vinegar
  13. 13.True or false: water is not needed for the turmeric test. (a) False (b) True
  14. 14.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  15. 15.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) water (d) a battery cell
  16. 16.🫧 Which of these is neutral? (a) tamarind water (b) salt water (c) vinegar (d) detergent water
  17. 17.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
  18. 18.⚖️ 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 liquid we test (c) the number of drops (d) the turmeric paper
  19. 19.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  20. 20.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) water (d) a balloon
  21. 21.True or false: orange juice is a base. (a) False (b) True
  22. 22.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  23. 23.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  24. 24.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) water (d) a dropper or spoon
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
  27. 27.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a battery cell (d) soap solution
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) lemon juice (d) white paper strips
  30. 30.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  31. 31.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
  33. 33.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) turmeric powder (d) yeast
  34. 34.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) sugar water (d) detergent water
  35. 35.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  36. 36.🫧 Which of these is a base? (a) sugar water (b) orange juice (c) vinegar (d) detergent water
  37. 37.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  38. 38.True or false: baking soda water is an acid. (a) False (b) True
  39. 39.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) a magnet (d) an indicator
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see

Answer key

  1. reddish-brown
  2. False
  3. needed
  4. soap solution
  5. False
  6. True
  7. False
  8. we keep it the same
  9. False
  10. False
  11. soap solution
  12. baking soda water
  13. False
  14. use only kitchen items
  15. a battery cell
  16. salt water
  17. tamarind water
  18. the liquid we test
  19. stays yellow
  20. water
  21. False
  22. stays yellow
  23. False
  24. an old shirt or apron
  25. yeast
  26. we measure it
  27. needed
  28. a battery cell
  29. a magnet
  30. needed
  31. needed
  32. reddish-brown
  33. yeast
  34. sugar water
  35. an acid
  36. detergent water
  37. an acid
  38. False
  39. an indicator
  40. the colour we see

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