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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 121 · 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.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  2. 2.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  3. 3.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  5. 5.True or false: a comb is needed for the turmeric test. (a) False (b) True
  6. 6.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  7. 7.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) water (d) yeast
  8. 8.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
  10. 10.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) vinegar (d) soap solution
  13. 13.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  14. 14.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) water (d) soap solution
  16. 16.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) a magnet (d) an indicator
  17. 17.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) plain water (d) baking soda water
  18. 18.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  19. 19.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
  20. 20.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  22. 22.🧺 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 balloon
  23. 23.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  24. 24.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a magnet (d) white paper strips
  26. 26.True or false: lemon juice is neutral. (a) False (b) True
  27. 27.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  28. 28.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) sugar water (d) baking soda water
  29. 29.True or false: sugar water is neutral. (a) True (b) False
  30. 30.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  31. 31.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
  32. 32.True or false: salt water is neutral. (a) True (b) False
  33. 33.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  34. 34.True or false: sugar water is an acid. (a) True (b) False
  35. 35.True or false: vinegar is an acid. (a) False (b) True
  36. 36.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
  37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) water (d) a battery cell
  38. 38.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  39. 39.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
  40. 40.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) vinegar (d) plain water

Answer key

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

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