← Turmeric indicator: acid or base? lesson New set →

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 778 · 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 is the odd one out? (a) lemon juice (b) detergent water (c) plain water (d) tamarind water
  2. 2.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) sugar water (d) vinegar
  3. 3.⚖️ 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 change it (c) we measure it
  4. 4.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the number of drops
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) water (d) turmeric powder
  7. 7.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  8. 8.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) a mirror (d) turmeric powder
  9. 9.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  10. 10.🔍 Which is the odd one out? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
  11. 11.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) soap solution (d) vinegar
  12. 12.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  13. 13.🛟 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
  14. 14.🫧 Which of these is neutral? (a) tamarind water (b) orange juice (c) sugar water (d) soap solution
  15. 15.True or false: orange juice is neutral. (a) True (b) False
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
  17. 17.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  19. 19.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) plain water (d) baking soda water
  20. 20.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  21. 21.True or false: a balloon is needed for the turmeric test. (a) True (b) False
  22. 22.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  24. 24.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  25. 25.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  26. 26.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) vinegar (d) baking soda water
  28. 28.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  29. 29.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) white paper strips (c) turmeric powder (d) a comb
  30. 30.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  31. 31.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
  32. 32.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
  33. 33.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) white paper strips (d) a balloon
  34. 34.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
  35. 35.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a comb (c) lemon juice (d) water
  37. 37.True or false: plain water is neutral. (a) True (b) False
  38. 38.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
  39. 39.⚖️ 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
  40. 40.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed

Answer key

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

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids