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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 984 · 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.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
  2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) soap solution (d) yeast
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the turmeric paper
  4. 4.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  5. 5.🧺 Which of these is needed for the turmeric test? (a) yeast (b) water (c) a comb (d) a magnet
  6. 6.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
  8. 8.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) detergent water (c) baking soda water (d) soap solution
  9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a magnet (d) water
  10. 10.🫧 Which of these is neutral? (a) curd (b) sugar water (c) tamarind water (d) orange juice
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  12. 12.True or false: plain water keeps turmeric yellow. (a) False (b) True
  13. 13.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  14. 14.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  15. 15.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  16. 16.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a balloon (c) soap solution (d) lemon juice
  17. 17.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  18. 18.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
  19. 19.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) baking soda water (d) sugar water
  20. 20.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
  21. 21.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  22. 22.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) your school uniform (d) a white party dress
  23. 23.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
  24. 24.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
  25. 25.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  26. 26.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
  28. 28.True or false: plain water is an acid. (a) False (b) True
  29. 29.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  30. 30.True or false: tamarind water is neutral. (a) True (b) False
  31. 31.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  32. 32.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  33. 33.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the light we look in
  35. 35.🧺 Which of these is needed for the turmeric test? (a) yeast (b) lemon juice (c) a balloon (d) a comb
  36. 36.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) detergent water (d) sugar water
  37. 37.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) lemon juice (d) white paper strips
  38. 38.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  39. 39.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
  40. 40.True or false: vinegar keeps turmeric yellow. (a) True (b) False

Answer key

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

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