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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 193 · 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) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
  2. 2.True or false: vinegar is a base. (a) True (b) False
  3. 3.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  4. 4.⚖️ 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 number of drops
  5. 5.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
  6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
  7. 7.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  8. 8.⚖️ 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
  9. 9.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
  10. 10.True or false: soap solution is neutral. (a) False (b) True
  11. 11.🫧 Which of these is neutral? (a) tamarind water (b) soap solution (c) plain water (d) lemon juice
  12. 12.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) vinegar (d) baking soda water
  13. 13.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  14. 14.🫧 Which of these is neutral? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
  15. 15.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  16. 16.⚖️ 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
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the colour we see
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  19. 19.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) a mirror (d) turmeric powder
  20. 20.True or false: plain water keeps turmeric yellow. (a) True (b) False
  21. 21.True or false: orange juice is an acid. (a) True (b) False
  22. 22.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  23. 23.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) soap solution (d) baking soda water
  24. 24.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) tamarind water (d) baking soda water
  25. 25.True or false: detergent water is neutral. (a) True (b) False
  26. 26.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) plain water (d) soap solution
  27. 27.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) soap solution
  28. 28.True or false: curd is a base. (a) True (b) False
  29. 29.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
  31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) a balloon (d) turmeric powder
  32. 32.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
  34. 34.True or false: water is not needed for the turmeric test. (a) True (b) False
  35. 35.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  36. 36.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  37. 37.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  38. 38.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  39. 39.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green
  40. 40.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False

Answer key

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

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