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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 717 · 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) tamarind water (b) soap solution (c) detergent water (d) baking soda water
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
  4. 4.True or false: lemon juice is an acid. (a) True (b) False
  5. 5.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  6. 6.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  7. 7.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  8. 8.🫧 Which of these is neutral? (a) baking soda water (b) soap solution (c) orange juice (d) sugar water
  9. 9.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) sugar water (d) soap solution
  11. 11.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  12. 12.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  13. 13.⚖️ 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
  14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
  15. 15.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
  16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a battery cell (d) water
  17. 17.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) tamarind water (d) soap solution
  18. 18.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) soap solution (d) curd
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  20. 20.⚖️ 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
  21. 21.🫧 Which of these is a base? (a) vinegar (b) lemon juice (c) soap solution (d) sugar water
  22. 22.⚖️ 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
  23. 23.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) sugar water (d) detergent water
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) yeast (d) white paper strips
  26. 26.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
  28. 28.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  31. 31.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  32. 32.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) water (c) soap solution (d) turmeric powder
  33. 33.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
  34. 34.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
  35. 35.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  36. 36.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
  37. 37.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  38. 38.True or false: plain water keeps turmeric yellow. (a) False (b) True
  39. 39.⚖️ 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 change it (c) we measure it
  40. 40.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed

Answer key

  1. tamarind water
  2. False
  3. reddish-brown
  4. True
  5. stays yellow
  6. an acid
  7. False
  8. sugar water
  9. stays yellow
  10. soap solution
  11. a base
  12. an acid
  13. True
  14. reddish-brown
  15. True
  16. a battery cell
  17. soap solution
  18. curd
  19. False
  20. we keep it the same
  21. soap solution
  22. we change it
  23. detergent water
  24. the number of drops
  25. yeast
  26. False
  27. lemon juice
  28. stays yellow
  29. True
  30. True
  31. True
  32. yeast
  33. False
  34. vinegar
  35. False
  36. an indicator
  37. True
  38. True
  39. we measure it
  40. needed

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