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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 167 · 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.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
  2. 2.True or false: detergent water is neutral. (a) False (b) True
  3. 3.⚖️ 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
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
  5. 5.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
  7. 7.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
  8. 8.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap water is a base (d) soap is magnetic
  10. 10.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) water (d) a balloon
  11. 11.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  12. 12.True or false: salt water is a base. (a) True (b) False
  13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
  14. 14.⚖️ 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 measure it (c) we change it
  15. 15.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  16. 16.⚖️ 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
  17. 17.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  18. 18.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  19. 19.⚖️ 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 turmeric paper (d) the light we look in
  20. 20.True or false: sugar water is neutral. (a) False (b) True
  21. 21.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  22. 22.🫧 Which of these is neutral? (a) lemon juice (b) vinegar (c) detergent water (d) sugar water
  23. 23.True or false: orange juice is a base. (a) True (b) False
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
  25. 25.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
  26. 26.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
  28. 28.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) baking soda water (d) detergent water
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) lemon juice (c) turmeric powder (d) white paper strips
  30. 30.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  31. 31.🫧 Which of these is an acid? (a) salt water (b) plain water (c) orange juice (d) sugar water
  32. 32.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
  34. 34.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
  35. 35.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  36. 36.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) water (d) turmeric powder
  38. 38.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  39. 39.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  40. 40.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed

Answer key

  1. an old shirt or apron
  2. False
  3. we keep it the same
  4. we change it
  5. False
  6. reddish
  7. lemon juice
  8. stays yellow
  9. soap water is a base
  10. water
  11. True
  12. False
  13. it stays yellow
  14. we measure it
  15. an acid
  16. False
  17. True
  18. needed
  19. the liquid we test
  20. True
  21. turns reddish-brown
  22. sugar water
  23. False
  24. the colour we see
  25. use only kitchen items
  26. True
  27. we keep it the same
  28. vinegar
  29. yeast
  30. needed
  31. orange juice
  32. needed
  33. the number of drops
  34. reddish-brown
  35. False
  36. an acid
  37. a balloon
  38. not needed
  39. False
  40. needed

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