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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 469 · 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.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  2. 2.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
  3. 3.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) soap solution (d) yeast
  4. 4.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) salt water (d) lemon juice
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
  6. 6.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  7. 7.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  8. 8.True or false: salt water is neutral. (a) True (b) False
  9. 9.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
  11. 11.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  12. 12.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  14. 14.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
  15. 15.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  16. 16.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
  17. 17.🫧 Which of these is neutral? (a) sugar water (b) lemon juice (c) soap solution (d) curd
  18. 18.🫧 Which of these is a base? (a) orange juice (b) lemon juice (c) vinegar (d) soap solution
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  22. 22.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) lemon juice (d) baking soda water
  23. 23.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  24. 24.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a comb (d) white paper strips
  26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) lemon juice (d) white paper strips
  27. 27.True or false: detergent water is a base. (a) True (b) False
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a battery cell (c) turmeric powder (d) a dropper or spoon
  29. 29.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  30. 30.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) lemon juice
  31. 31.⚖️ 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
  32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) it stays white (d) green
  33. 33.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  34. 34.True or false: plain water is neutral. (a) False (b) True
  35. 35.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  36. 36.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
  37. 37.⚖️ 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
  38. 38.True or false: water is needed for the turmeric test. (a) True (b) False
  39. 39.True or false: orange juice is an acid. (a) False (b) True
  40. 40.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners

Answer key

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

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