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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 278 · 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 lemon juice for the turmeric test? (a) not needed (b) needed
  2. 2.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
  3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) turmeric powder (d) yeast
  4. 4.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) soap solution (d) lemon juice
  5. 5.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
  6. 6.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  7. 7.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  8. 8.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) sugar water (d) detergent water
  9. 9.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a comb (c) water (d) lemon juice
  11. 11.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  13. 13.True or false: a comb is needed for the turmeric test. (a) False (b) True
  14. 14.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  15. 15.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  16. 16.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) lemon juice (c) a magnet (d) a battery cell
  17. 17.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) salt water
  18. 18.🫧 Which of these is an acid? (a) soap solution (b) curd (c) salt water (d) detergent water
  19. 19.True or false: baking soda water is a base. (a) False (b) True
  20. 20.True or false: sugar water is an acid. (a) True (b) False
  21. 21.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
  22. 22.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) detergent water (d) soap solution
  23. 23.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
  24. 24.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
  25. 25.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  26. 26.🛟 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
  27. 27.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  28. 28.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  30. 30.True or false: salt water keeps turmeric yellow. (a) True (b) False
  31. 31.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  32. 32.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  33. 33.🛟 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
  34. 34.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  35. 35.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
  37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  38. 38.🫧 Which of these is a base? (a) sugar water (b) detergent water (c) vinegar (d) orange juice
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the light we look in
  40. 40.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice

Answer key

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

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