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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 139 · 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 is an acid? (a) tamarind water (b) detergent water (c) plain water (d) sugar water
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the colour we see
  3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
  4. 4.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) lemon juice (d) plain water
  5. 5.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) a balloon (d) white paper strips
  6. 6.🛟 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
  7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
  8. 8.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) a magnet (d) white paper strips
  9. 9.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  10. 10.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
  11. 11.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  12. 12.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) tamarind water (d) vinegar
  13. 13.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
  14. 14.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) yeast (d) soap solution
  15. 15.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  16. 16.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  17. 17.True or false: soap solution is neutral. (a) True (b) False
  18. 18.⚖️ 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
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
  20. 20.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
  21. 21.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  23. 23.True or false: baking soda water is a base. (a) True (b) False
  24. 24.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  25. 25.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) a magnet (d) water
  26. 26.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a comb (c) a dropper or spoon (d) water
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
  29. 29.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a magnet (d) white paper strips
  31. 31.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
  32. 32.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) soap solution (d) salt water
  33. 33.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  34. 34.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) soap solution (d) plain water
  35. 35.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) a comb (d) lemon juice
  36. 36.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
  37. 37.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) plain water (d) vinegar
  38. 38.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  39. 39.🫧 Which of these is a base? (a) vinegar (b) detergent water (c) curd (d) sugar water
  40. 40.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow

Answer key

  1. tamarind water
  2. the liquid we test
  3. reddish
  4. lemon juice
  5. a balloon
  6. use only kitchen items
  7. reddish-brown
  8. a magnet
  9. not needed
  10. lemon juice
  11. True
  12. baking soda water
  13. it stays yellow
  14. yeast
  15. needed
  16. False
  17. False
  18. we keep it the same
  19. False
  20. True
  21. not needed
  22. False
  23. True
  24. a base
  25. water
  26. needed
  27. a comb
  28. the turmeric paper
  29. not needed
  30. a magnet
  31. False
  32. vinegar
  33. an acid
  34. soap solution
  35. a comb
  36. it stays yellow
  37. soap solution
  38. needed
  39. detergent water
  40. stays yellow

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