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

Turmeric Indicator Experiment Worksheet

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

Answer key

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

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