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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 397 · 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? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the number of drops (d) the colour we see
  4. 4.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) turmeric powder (d) a battery cell
  5. 5.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  6. 6.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  7. 7.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  8. 8.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  9. 9.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  10. 10.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  11. 11.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) water (c) a magnet (d) a mirror
  12. 12.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  13. 13.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) a comb (d) turmeric powder
  14. 14.⚖️ 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
  15. 15.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  16. 16.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  17. 17.True or false: salt water is neutral. (a) True (b) False
  18. 18.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) detergent water (d) plain water
  19. 19.🛟 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
  20. 20.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  21. 21.True or false: water is needed for the turmeric test. (a) False (b) True
  22. 22.🫧 Which of these is an acid? (a) sugar water (b) detergent water (c) baking soda water (d) tamarind water
  23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
  24. 24.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  25. 25.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  26. 26.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
  27. 27.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  28. 28.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  29. 29.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) soap solution (d) vinegar
  30. 30.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
  31. 31.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) reddish (d) green
  32. 32.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the light we look in
  34. 34.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) tamarind water (d) vinegar
  35. 35.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a battery cell (c) lemon juice (d) white paper strips
  37. 37.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
  38. 38.True or false: sugar water is a base. (a) False (b) True
  39. 39.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) salt water (d) baking soda water
  40. 40.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown

Answer key

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

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