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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 520 · 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.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
  2. 2.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  3. 3.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a mirror (d) a balloon
  4. 4.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) water (c) lemon juice (d) a dropper or spoon
  6. 6.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
  7. 7.True or false: orange juice is a base. (a) True (b) False
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  9. 9.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  10. 10.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) water (d) a mirror
  11. 11.⚖️ 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 colour we see (c) the turmeric paper (d) the liquid we test
  12. 12.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) vinegar (d) soap solution
  13. 13.True or false: tamarind water is neutral. (a) True (b) False
  14. 14.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) tamarind water (c) sugar water (d) vinegar
  15. 15.🟡 Which of these keeps turmeric yellow? (a) plain water (b) detergent water (c) baking soda water (d) soap solution
  16. 16.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  17. 17.True or false: lemon juice is a base. (a) True (b) False
  18. 18.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  19. 19.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  20. 20.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
  21. 21.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
  22. 22.True or false: soap solution is an acid. (a) False (b) True
  23. 23.True or false: yeast is needed for the turmeric test. (a) False (b) True
  24. 24.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  25. 25.🫧 Which of these is neutral? (a) baking soda water (b) vinegar (c) soap solution (d) sugar water
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
  27. 27.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) detergent water (d) tamarind water
  28. 28.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.🛟 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
  30. 30.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  31. 31.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  32. 32.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
  33. 33.🫧 Which of these is a base? (a) plain water (b) tamarind water (c) detergent water (d) lemon juice
  34. 34.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) a dropper or spoon (d) lemon juice
  37. 37.🫧 Which of these is a base? (a) sugar water (b) baking soda water (c) salt water (d) vinegar
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
  40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue

Answer key

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

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