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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 599 · 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.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  2. 2.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) a balloon (d) white paper strips
  3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) white paper strips (d) water
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
  6. 6.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) white paper strips (d) a battery cell
  7. 7.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) water (c) yeast (d) a mirror
  8. 8.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
  9. 9.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) baking soda water (c) soap solution (d) detergent water
  10. 10.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) tamarind water (d) vinegar
  11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  12. 12.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) vinegar (d) sugar water
  13. 13.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) orange juice (d) soap solution
  14. 14.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  15. 15.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  16. 16.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  17. 17.🫧 Which of these is an acid? (a) baking soda water (b) lemon juice (c) detergent water (d) salt water
  18. 18.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  19. 19.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
  20. 20.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  21. 21.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  23. 23.🔮 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
  24. 24.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  25. 25.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  26. 26.True or false: sugar water keeps turmeric yellow. (a) True (b) False
  27. 27.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
  28. 28.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
  30. 30.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) white paper strips (d) yeast
  32. 32.True or false: baking soda water is a base. (a) False (b) True
  33. 33.True or false: curd is neutral. (a) True (b) False
  34. 34.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) lemon juice (d) a balloon
  35. 35.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  36. 36.⚖️ 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
  37. 37.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  38. 38.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  40. 40.True or false: plain water turns turmeric reddish-brown. (a) True (b) False

Answer key

  1. False
  2. a balloon
  3. a balloon
  4. we measure it
  5. we keep it the same
  6. a battery cell
  7. water
  8. lemon juice
  9. tamarind water
  10. detergent water
  11. it stays yellow
  12. soap solution
  13. orange juice
  14. an acid
  15. not needed
  16. not needed
  17. lemon juice
  18. True
  19. an old shirt or apron
  20. False
  21. stays yellow
  22. we change it
  23. reddish-brown
  24. not needed
  25. False
  26. True
  27. use only kitchen items
  28. stays yellow
  29. soap water is a base
  30. True
  31. yeast
  32. True
  33. False
  34. lemon juice
  35. False
  36. True
  37. turns reddish-brown
  38. turns reddish-brown
  39. True
  40. False

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