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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 738 · 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 keeps turmeric yellow? (a) salt water (b) detergent water (c) baking soda water (d) soap solution
  2. 2.True or false: curd is a base. (a) True (b) False
  3. 3.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  4. 4.🫧 Which of these is neutral? (a) lemon juice (b) sugar water (c) soap solution (d) orange juice
  5. 5.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) turmeric powder (d) a magnet
  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: a comb is not needed for the turmeric test. (a) False (b) True
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the liquid we test
  10. 10.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
  11. 11.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
  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 colour we see (c) the liquid we test
  14. 14.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  15. 15.🛟 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
  16. 16.🫧 Which of these is a base? (a) soap solution (b) salt water (c) lemon juice (d) orange juice
  17. 17.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) a dropper or spoon (c) soap solution (d) water
  18. 18.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  19. 19.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  21. 21.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  22. 22.🧺 Which of these is needed for the turmeric test? (a) a comb (b) water (c) a battery cell (d) a balloon
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
  24. 24.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) bright blue (d) reddish-brown
  25. 25.True or false: orange juice is an acid. (a) False (b) True
  26. 26.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  28. 28.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  29. 29.True or false: plain water is a base. (a) False (b) True
  30. 30.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) water (d) yeast
  31. 31.True or false: water is needed for the turmeric test. (a) False (b) True
  32. 32.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
  33. 33.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  34. 34.True or false: a balloon is needed for the turmeric test. (a) False (b) True
  35. 35.True or false: vinegar is an acid. (a) False (b) True
  36. 36.🫧 Which of these is neutral? (a) detergent water (b) curd (c) tamarind water (d) salt water
  37. 37.True or false: water is not needed for the turmeric test. (a) True (b) False
  38. 38.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) turmeric powder (c) water (d) soap solution
  39. 39.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  40. 40.True or false: vinegar is a base. (a) True (b) False

Answer key

  1. salt water
  2. False
  3. an acid
  4. sugar water
  5. an acid
  6. a magnet
  7. True
  8. True
  9. the liquid we test
  10. plain water
  11. False
  12. we keep it the same
  13. the light we look in
  14. stays yellow
  15. an old shirt or apron
  16. soap solution
  17. a battery cell
  18. False
  19. True
  20. False
  21. False
  22. water
  23. we keep it the same
  24. reddish-brown
  25. True
  26. turns reddish-brown
  27. not needed
  28. needed
  29. False
  30. yeast
  31. True
  32. it stays yellow
  33. a base
  34. False
  35. True
  36. salt water
  37. False
  38. a balloon
  39. not needed
  40. False

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