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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 323 · 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.

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

Answer key

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

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