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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 258 · 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.True or false: salt water keeps turmeric yellow. (a) False (b) True
  2. 2.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  3. 3.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  4. 4.🫧 Which of these is an acid? (a) sugar water (b) lemon juice (c) salt water (d) baking soda water
  5. 5.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  6. 6.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) water (c) a comb (d) a magnet
  7. 7.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) a mirror (d) turmeric powder
  8. 8.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  9. 9.⚖️ 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 measure it (c) we change it
  10. 10.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
  11. 11.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) curd (d) baking soda water
  12. 12.True or false: detergent water is a base. (a) True (b) False
  13. 13.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  14. 14.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  15. 15.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  16. 16.True or false: water is needed for the turmeric test. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) plain water (d) vinegar
  18. 18.True or false: baking soda water is neutral. (a) False (b) True
  19. 19.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
  21. 21.⚖️ 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
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the liquid we test (d) the turmeric paper
  23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
  24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
  25. 25.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
  26. 26.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  27. 27.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  28. 28.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
  29. 29.🫧 Which of these is an acid? (a) vinegar (b) plain water (c) soap solution (d) salt water
  30. 30.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  31. 31.🫧 Which of these is a base? (a) vinegar (b) salt water (c) soap solution (d) plain water
  32. 32.True or false: lemon juice is neutral. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
  35. 35.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
  37. 37.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  38. 38.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
  39. 39.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) turmeric powder (d) a comb
  40. 40.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a magnet (d) soap solution

Answer key

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

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