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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 651 · 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.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
  2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
  3. 3.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  4. 4.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
  6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
  8. 8.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  9. 9.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  10. 10.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) soap solution (c) a mirror (d) a comb
  11. 11.True or false: lemon juice is an acid. (a) False (b) True
  12. 12.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
  13. 13.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) plain water (c) salt water (d) vinegar
  14. 14.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
  15. 15.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  16. 16.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
  17. 17.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  18. 18.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  19. 19.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  20. 20.🫧 Which of these is an acid? (a) detergent water (b) lemon juice (c) baking soda water (d) plain water
  21. 21.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  23. 23.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  24. 24.🫧 Which of these is an acid? (a) tamarind water (b) sugar water (c) baking soda water (d) soap solution
  25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a mirror (d) lemon juice
  26. 26.True or false: orange juice is an acid. (a) False (b) True
  27. 27.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
  28. 28.⚖️ 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 turmeric paper (c) the colour we see (d) the liquid we test
  29. 29.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a comb (d) lemon juice
  30. 30.🫧 Which of these is a base? (a) orange juice (b) salt water (c) tamarind water (d) soap solution
  31. 31.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  32. 32.True or false: vinegar is neutral. (a) False (b) True
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) a dropper or spoon (d) soap solution
  34. 34.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  35. 35.True or false: tamarind water is an acid. (a) False (b) True
  36. 36.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  37. 37.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) a magnet (d) water
  38. 38.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
  39. 39.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  40. 40.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) water (c) soap solution (d) lemon juice

Answer key

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

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