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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 212 · 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: sugar water is neutral. (a) True (b) False
  2. 2.True or false: lemon juice is an acid. (a) False (b) True
  3. 3.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  4. 4.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  5. 5.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
  6. 6.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) vinegar (d) salt water
  7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) white paper strips (d) a battery cell
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  11. 11.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
  12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
  13. 13.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  15. 15.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
  17. 17.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
  18. 18.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) water (d) a comb
  19. 19.🟡 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
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) water (d) a magnet
  21. 21.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
  22. 22.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  23. 23.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
  24. 24.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  25. 25.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  26. 26.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) salt water (d) curd
  27. 27.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
  28. 28.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  29. 29.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) salt water (d) soap solution
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a magnet (d) soap solution
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  32. 32.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  33. 33.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  34. 34.True or false: water is needed for the turmeric test. (a) False (b) True
  35. 35.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) yeast (d) lemon juice
  37. 37.🫧 Which of these is neutral? (a) soap solution (b) salt water (c) tamarind water (d) lemon juice
  38. 38.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the turmeric paper
  40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a comb (d) lemon juice

Answer key

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

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