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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 606 · 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: vinegar is an acid. (a) False (b) True
  2. 2.True or false: curd is an acid. (a) False (b) True
  3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
  4. 4.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a magnet (d) turmeric powder
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  6. 6.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
  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 light we look in (c) the liquid we test
  8. 8.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
  10. 10.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  11. 11.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  15. 15.🫧 Which of these is a base? (a) detergent water (b) plain water (c) vinegar (d) sugar water
  16. 16.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  17. 17.⚖️ 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
  18. 18.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) water (d) a battery cell
  20. 20.🛟 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
  21. 21.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a magnet (c) lemon juice (d) water
  22. 22.⚖️ 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
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the turmeric paper
  24. 24.True or false: soap solution is a base. (a) True (b) False
  25. 25.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  26. 26.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  27. 27.True or false: tamarind water is a base. (a) False (b) True
  28. 28.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) lemon juice (d) soap solution
  29. 29.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  30. 30.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
  31. 31.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (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 measure it (b) we keep it the same (c) we change it
  34. 34.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) white paper strips (d) a comb
  35. 35.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
  36. 36.🫧 Which of these is an acid? (a) plain water (b) salt water (c) soap solution (d) vinegar
  37. 37.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  38. 38.True or false: baking soda water is a base. (a) False (b) True
  39. 39.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
  40. 40.🫧 Which of these is neutral? (a) baking soda water (b) tamarind water (c) detergent water (d) salt water

Answer key

  1. True
  2. True
  3. reddish-brown
  4. turmeric powder
  5. True
  6. vinegar
  7. the light we look in
  8. stays yellow
  9. we keep it the same
  10. an acid
  11. False
  12. reddish
  13. we keep it the same
  14. True
  15. detergent water
  16. False
  17. False
  18. True
  19. water
  20. use only kitchen items
  21. a magnet
  22. False
  23. the colour we see
  24. True
  25. False
  26. False
  27. False
  28. lemon juice
  29. turns reddish-brown
  30. True
  31. needed
  32. False
  33. we measure it
  34. white paper strips
  35. salt water
  36. vinegar
  37. not needed
  38. True
  39. lemon juice
  40. salt water

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