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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 918 · 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: soap solution turns turmeric reddish-brown. (a) True (b) False
  2. 2.True or false: baking soda water is an acid. (a) False (b) True
  3. 3.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) a dropper or spoon (d) a comb
  4. 4.⚖️ 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 measure it (c) we change it
  5. 5.🫧 Which of these is neutral? (a) tamarind water (b) vinegar (c) plain water (d) curd
  6. 6.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
  8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  9. 9.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  10. 10.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  11. 11.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) salt water (c) vinegar (d) lemon juice
  12. 12.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
  13. 13.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) plain water (d) detergent water
  14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the turmeric paper
  15. 15.True or false: water is not needed for the turmeric test. (a) True (b) False
  16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) turmeric powder (d) yeast
  17. 17.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  18. 18.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a comb (d) lemon juice
  20. 20.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  21. 21.🔮 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
  22. 22.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  23. 23.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
  24. 24.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  25. 25.🫧 Which of these is neutral? (a) curd (b) detergent water (c) salt water (d) soap solution
  26. 26.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) plain water (d) tamarind water
  27. 27.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) detergent water (d) baking soda water
  28. 28.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
  29. 29.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  30. 30.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  31. 31.⚖️ 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 turmeric paper (c) the liquid we test (d) the light we look in
  32. 32.True or false: lemon juice is neutral. (a) False (b) True
  33. 33.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) turmeric powder (d) a battery cell
  34. 34.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
  35. 35.True or false: salt water is an acid. (a) True (b) False
  36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a battery cell (d) a dropper or spoon
  37. 37.True or false: plain water is neutral. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) detergent water (d) baking soda water
  39. 39.True or false: plain water is a base. (a) True (b) False
  40. 40.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water

Answer key

  1. True
  2. False
  3. a dropper or spoon
  4. we measure it
  5. plain water
  6. True
  7. the number of drops
  8. we change it
  9. stays yellow
  10. a base
  11. baking soda water
  12. it turns yellow again
  13. plain water
  14. the colour we see
  15. False
  16. yeast
  17. stays yellow
  18. turns reddish-brown
  19. lemon juice
  20. stays yellow
  21. it stays yellow
  22. turns reddish-brown
  23. it stays yellow
  24. False
  25. salt water
  26. baking soda water
  27. tamarind water
  28. False
  29. False
  30. a base
  31. the liquid we test
  32. False
  33. turmeric powder
  34. use only kitchen items
  35. False
  36. a battery cell
  37. True
  38. vinegar
  39. False
  40. vinegar

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