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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 588 · 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.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) tamarind water (c) plain water (d) sugar water
  2. 2.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  3. 3.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
  4. 4.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  5. 5.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
  7. 7.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  8. 8.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  9. 9.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
  11. 11.True or false: plain water is neutral. (a) True (b) False
  12. 12.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
  14. 14.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  15. 15.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  16. 16.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  17. 17.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) white paper strips (d) a magnet
  18. 18.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  19. 19.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  20. 20.🫧 Which of these is a base? (a) salt water (b) lemon juice (c) vinegar (d) detergent water
  21. 21.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
  22. 22.True or false: curd is an acid. (a) True (b) False
  23. 23.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
  25. 25.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) lemon juice (d) soap solution
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  27. 27.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) soap solution (c) a battery cell (d) yeast
  28. 28.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
  30. 30.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
  31. 31.🫧 Which of these is neutral? (a) sugar water (b) orange juice (c) vinegar (d) curd
  32. 32.True or false: soap solution turns turmeric reddish-brown. (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 turmeric paper (b) the liquid we test (c) the number of drops (d) the colour we see
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
  35. 35.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) bright blue (d) it stays white
  36. 36.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
  37. 37.True or false: baking soda water is an acid. (a) False (b) True
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) sugar water (d) salt water

Answer key

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

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