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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 468 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) water (d) yeast
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  3. 3.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) tamarind water (d) baking soda water
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
  6. 6.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  7. 7.True or false: a comb is needed for the turmeric test. (a) False (b) True
  8. 8.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  9. 9.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) baking soda water (d) detergent water
  11. 11.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
  12. 12.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) vinegar (d) sugar water
  13. 13.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) turmeric powder (c) soap solution (d) lemon juice
  14. 14.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
  16. 16.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  17. 17.🫧 Which of these is neutral? (a) plain water (b) soap solution (c) curd (d) orange juice
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a battery cell (d) turmeric powder
  20. 20.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  21. 21.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  22. 22.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  23. 23.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a dropper or spoon (d) a balloon
  25. 25.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) it stays white (d) green
  26. 26.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  27. 27.⚖️ 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
  28. 28.🫧 Which of these is a base? (a) tamarind water (b) orange juice (c) vinegar (d) baking soda water
  29. 29.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
  30. 30.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
  31. 31.True or false: curd is an acid. (a) False (b) True
  32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a magnet (d) lemon juice
  33. 33.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
  34. 34.True or false: plain water is an acid. (a) True (b) False
  35. 35.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
  36. 36.⚖️ 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 measure it (c) we change it
  37. 37.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  38. 38.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  39. 39.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  40. 40.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid

Answer key

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

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