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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 138 · 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? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the colour we see
  2. 2.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  3. 3.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  4. 4.🫧 Which of these is a base? (a) lemon juice (b) detergent water (c) sugar water (d) salt water
  5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) a battery cell (d) water
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  8. 8.True or false: baking soda water is a base. (a) True (b) False
  9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) baking soda water (d) vinegar
  11. 11.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) salt water
  12. 12.🟡 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
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
  14. 14.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
  15. 15.⚖️ 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
  16. 16.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  17. 17.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) vinegar (d) baking soda water
  18. 18.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
  19. 19.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) tamarind water (d) soap solution
  20. 20.True or false: soap solution is a base. (a) True (b) False
  21. 21.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  22. 22.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  23. 23.True or false: detergent water is an acid. (a) True (b) False
  24. 24.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
  25. 25.🫧 Which of these is a base? (a) orange juice (b) sugar water (c) soap solution (d) tamarind water
  26. 26.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  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.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  29. 29.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  30. 30.⚖️ 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
  31. 31.True or false: salt water is neutral. (a) False (b) True
  32. 32.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  33. 33.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution
  34. 34.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  35. 35.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  37. 37.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the number of drops (d) the turmeric paper
  39. 39.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  40. 40.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow

Answer key

  1. the colour we see
  2. False
  3. an acid
  4. detergent water
  5. reddish-brown
  6. a battery cell
  7. True
  8. True
  9. turns reddish-brown
  10. baking soda water
  11. salt water
  12. soap water is a base
  13. False
  14. True
  15. False
  16. True
  17. baking soda water
  18. reddish-brown
  19. soap solution
  20. True
  21. True
  22. not needed
  23. False
  24. lemon juice
  25. soap solution
  26. stays yellow
  27. we keep it the same
  28. an acid
  29. True
  30. we change it
  31. True
  32. True
  33. tamarind water
  34. True
  35. False
  36. we keep it the same
  37. False
  38. the liquid we test
  39. not needed
  40. it stays yellow

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