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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 633 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  3. 3.🔍 Which is the odd one out? (a) lemon juice (b) salt water (c) tamarind water (d) detergent water
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) lemon juice (d) white paper strips
  5. 5.🛟 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
  6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
  7. 7.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
  8. 8.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
  9. 9.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  10. 10.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) soap solution (c) a balloon (d) a mirror
  11. 11.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  13. 13.True or false: yeast is needed for the turmeric test. (a) True (b) False
  14. 14.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a magnet (d) soap solution
  16. 16.🫧 Which of these is an acid? (a) salt water (b) tamarind water (c) sugar water (d) baking soda water
  17. 17.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  18. 18.True or false: water is needed for the turmeric test. (a) False (b) True
  19. 19.True or false: orange juice is an acid. (a) False (b) True
  20. 20.🫧 Which of these is a base? (a) vinegar (b) tamarind water (c) soap solution (d) curd
  21. 21.True or false: plain water keeps turmeric yellow. (a) False (b) True
  22. 22.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  23. 23.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
  24. 24.True or false: baking soda water is a base. (a) True (b) False
  25. 25.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  26. 26.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) turmeric powder (c) soap solution (d) water
  29. 29.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) soap solution (d) vinegar
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
  31. 31.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
  32. 32.True or false: vinegar is an acid. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
  34. 34.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  35. 35.True or false: a comb is needed for the turmeric test. (a) False (b) True
  36. 36.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) white paper strips (d) a balloon
  37. 37.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  38. 38.True or false: baking soda water is an acid. (a) True (b) False
  39. 39.🫧 Which of these is neutral? (a) baking soda water (b) curd (c) lemon juice (d) salt water
  40. 40.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution

Answer key

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

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