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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 456 · 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.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
  2. 2.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  3. 3.🫧 Which of these is a base? (a) curd (b) detergent water (c) tamarind water (d) sugar water
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the number of drops (d) the light we look in
  5. 5.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
  7. 7.🧺 Which of these is not needed for the turmeric test? (a) water (b) a battery cell (c) a dropper or spoon (d) turmeric powder
  8. 8.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a comb (d) a dropper or spoon
  9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a balloon (d) soap solution
  10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
  11. 11.True or false: a battery cell is 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 turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
  13. 13.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
  14. 14.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  15. 15.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  16. 16.🔍 Which is the odd one out? (a) plain water (b) salt water (c) vinegar (d) soap solution
  17. 17.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  18. 18.True or false: salt water is neutral. (a) True (b) False
  19. 19.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  20. 20.True or false: vinegar is an acid. (a) True (b) False
  21. 21.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
  22. 22.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
  23. 23.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  25. 25.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) tamarind water (d) salt water
  26. 26.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  27. 27.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) baking soda water (d) salt water
  28. 28.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a magnet (d) lemon juice
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  30. 30.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  31. 31.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) vinegar (d) soap solution
  32. 32.True or false: salt water keeps turmeric yellow. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
  34. 34.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  35. 35.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  36. 36.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  37. 37.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) white paper strips (d) turmeric powder
  39. 39.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue

Answer key

  1. reddish-brown
  2. True
  3. detergent water
  4. the liquid we test
  5. False
  6. soap water is a base
  7. a battery cell
  8. a comb
  9. a balloon
  10. an old shirt or apron
  11. False
  12. we keep it the same
  13. plain water
  14. needed
  15. an acid
  16. soap solution
  17. turns reddish-brown
  18. True
  19. a base
  20. True
  21. soap solution
  22. it stays yellow
  23. sugar water
  24. False
  25. tamarind water
  26. False
  27. baking soda water
  28. a magnet
  29. we measure it
  30. stays yellow
  31. soap solution
  32. True
  33. False
  34. False
  35. True
  36. turns reddish-brown
  37. it stays yellow
  38. a magnet
  39. neutral
  40. reddish

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