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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 407 · 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 is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
  2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  3. 3.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
  4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) turmeric powder (d) a balloon
  5. 5.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) lemon juice (d) vinegar
  6. 6.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  7. 7.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  8. 8.True or false: lemon juice is neutral. (a) False (b) True
  9. 9.⚖️ 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
  10. 10.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  11. 11.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) turmeric powder (d) soap solution
  13. 13.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) detergent water (d) sugar water
  14. 14.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
  15. 15.True or false: tamarind water is an acid. (a) False (b) True
  16. 16.⚖️ 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
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
  18. 18.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  19. 19.🔮 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
  20. 20.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) turmeric powder (d) a magnet
  21. 21.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) a battery cell (d) a dropper or spoon
  22. 22.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.True or false: yeast is needed for the turmeric test. (a) False (b) True
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
  25. 25.🟡 Which of these keeps turmeric yellow? (a) salt water (b) detergent water (c) baking soda water (d) soap solution
  26. 26.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
  28. 28.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.🫧 Which of these is an acid? (a) vinegar (b) detergent water (c) soap solution (d) plain water
  30. 30.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  32. 32.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) white paper strips (c) lemon juice (d) soap solution
  33. 33.🫧 Which of these is a base? (a) curd (b) soap solution (c) tamarind water (d) lemon juice
  34. 34.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  35. 35.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  36. 36.🫧 Which of these is neutral? (a) orange juice (b) vinegar (c) plain water (d) soap solution
  37. 37.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  38. 38.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the number of drops (d) the turmeric paper
  40. 40.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow

Answer key

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

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