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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 475 · 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 kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
  2. 2.🫧 Which of these is neutral? (a) vinegar (b) sugar water (c) lemon juice (d) curd
  3. 3.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it turns darker red (d) it disappears
  4. 4.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  6. 6.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
  7. 7.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  8. 8.⚖️ 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
  9. 9.True or false: water is not needed for the turmeric test. (a) False (b) True
  10. 10.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  11. 11.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) sugar water (d) soap solution
  12. 12.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  13. 13.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  14. 14.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  15. 15.True or false: plain water is an acid. (a) False (b) True
  16. 16.⚖️ 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
  17. 17.⚖️ 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
  18. 18.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
  19. 19.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) yeast (c) turmeric powder (d) a dropper or spoon
  21. 21.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) tamarind water
  22. 22.True or false: sugar water is a base. (a) False (b) True
  23. 23.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  25. 25.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
  27. 27.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) sugar water (d) lemon juice
  28. 28.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
  29. 29.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) vinegar (c) detergent water (d) soap solution
  30. 30.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) baking soda water (d) salt water
  31. 31.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) vinegar (d) salt water
  32. 32.True or false: tamarind water is an acid. (a) False (b) True
  33. 33.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  34. 34.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) water (d) a mirror
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a comb (d) white paper strips
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) turmeric powder (d) lemon juice
  37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  39. 39.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  40. 40.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False

Answer key

  1. the light we look in
  2. sugar water
  3. it turns yellow again
  4. stays yellow
  5. not needed
  6. an old shirt or apron
  7. not needed
  8. True
  9. False
  10. stays yellow
  11. soap solution
  12. False
  13. True
  14. stays yellow
  15. False
  16. False
  17. we keep it the same
  18. reddish
  19. True
  20. yeast
  21. tamarind water
  22. False
  23. neutral
  24. True
  25. use only kitchen items
  26. False
  27. lemon juice
  28. lemon juice
  29. vinegar
  30. baking soda water
  31. detergent water
  32. True
  33. needed
  34. water
  35. a comb
  36. a mirror
  37. it stays yellow
  38. we change it
  39. neutral
  40. False

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