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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 210 · 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: baking soda water is neutral. (a) False (b) True
  2. 2.⚖️ 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
  3. 3.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  4. 4.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) lemon juice (d) baking soda water
  5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  6. 6.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  7. 7.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
  9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) turmeric powder (d) a mirror
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
  11. 11.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a comb (d) white paper strips
  12. 12.True or false: detergent water is a base. (a) False (b) True
  13. 13.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  14. 14.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) turmeric powder (d) a comb
  15. 15.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  16. 16.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
  17. 17.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  19. 19.True or false: sugar water is an acid. (a) True (b) False
  20. 20.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  21. 21.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) lemon juice (d) detergent water
  22. 22.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a balloon (d) water
  24. 24.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) baking soda water (d) lemon juice
  25. 25.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
  26. 26.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
  27. 27.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  28. 28.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) water (d) soap solution
  30. 30.🫧 Which of these is neutral? (a) curd (b) salt water (c) vinegar (d) lemon juice
  31. 31.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
  32. 32.🫧 Which of these is a base? (a) baking soda water (b) curd (c) vinegar (d) tamarind water
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  34. 34.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  35. 35.🫧 Which of these is an acid? (a) plain water (b) vinegar (c) soap solution (d) sugar water
  36. 36.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) curd (d) sugar water
  37. 37.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) orange juice (d) salt water
  38. 38.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  40. 40.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water

Answer key

  1. False
  2. the colour we see
  3. True
  4. baking soda water
  5. it stays yellow
  6. stays yellow
  7. not needed
  8. we keep it the same
  9. a mirror
  10. we keep it the same
  11. white paper strips
  12. True
  13. True
  14. turmeric powder
  15. not needed
  16. soap solution
  17. stays yellow
  18. False
  19. False
  20. False
  21. detergent water
  22. True
  23. a balloon
  24. lemon juice
  25. plain water
  26. an old shirt or apron
  27. True
  28. True
  29. a magnet
  30. salt water
  31. reddish
  32. baking soda water
  33. False
  34. a base
  35. vinegar
  36. curd
  37. orange juice
  38. lemon juice
  39. True
  40. lemon juice

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