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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 391 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
  2. 2.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  3. 3.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
  4. 4.True or false: sugar water is neutral. (a) False (b) True
  5. 5.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
  7. 7.⚖️ 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
  8. 8.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
  9. 9.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
  10. 10.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
  11. 11.True or false: baking soda water is neutral. (a) False (b) True
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
  13. 13.🧺 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
  14. 14.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
  15. 15.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) water (d) a balloon
  16. 16.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  17. 17.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) yeast (d) lemon juice
  18. 18.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  19. 19.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a balloon (d) lemon juice
  21. 21.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) salt water (c) detergent water (d) baking soda water
  22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  24. 24.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) yeast (d) a dropper or spoon
  25. 25.True or false: salt water is an acid. (a) False (b) True
  26. 26.True or false: baking soda water is a base. (a) True (b) False
  27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
  28. 28.True or false: vinegar is an acid. (a) False (b) True
  29. 29.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  30. 30.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
  32. 32.True or false: plain water is neutral. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  34. 34.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  35. 35.True or false: detergent water keeps turmeric yellow. (a) False (b) True
  36. 36.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  37. 37.⚖️ 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
  38. 38.True or false: tamarind water is neutral. (a) True (b) False
  39. 39.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) an indicator (d) a pulley
  40. 40.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base

Answer key

  1. False
  2. stays yellow
  3. soap water is a base
  4. True
  5. not needed
  6. reddish-brown
  7. we change it
  8. sugar water
  9. use only kitchen items
  10. reddish
  11. False
  12. False
  13. a battery cell
  14. vinegar
  15. water
  16. an acid
  17. lemon juice
  18. stays yellow
  19. a base
  20. a balloon
  21. salt water
  22. True
  23. False
  24. yeast
  25. False
  26. True
  27. we keep it the same
  28. True
  29. an acid
  30. needed
  31. soap solution
  32. True
  33. we keep it the same
  34. True
  35. False
  36. neutral
  37. False
  38. False
  39. an indicator
  40. a base

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