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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 537 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a mirror (d) soap solution
  2. 2.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) tamarind water (d) plain water
  3. 3.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  4. 4.True or false: yeast is needed for the turmeric test. (a) False (b) True
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
  6. 6.True or false: tamarind water is neutral. (a) True (b) False
  7. 7.🫧 Which of these is a base? (a) baking soda water (b) lemon juice (c) orange juice (d) vinegar
  8. 8.🧺 Which of these is needed for the turmeric test? (a) water (b) a mirror (c) a magnet (d) yeast
  9. 9.True or false: a mirror is needed for the turmeric test. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
  11. 11.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
  12. 12.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) baking soda water (d) detergent water
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the number of drops
  14. 14.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  15. 15.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) detergent water (c) sugar water (d) lemon juice
  16. 16.🫧 Which of these is an acid? (a) orange juice (b) plain water (c) soap solution (d) salt water
  17. 17.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
  18. 18.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) lemon juice (c) baking soda water (d) detergent water
  19. 19.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  20. 20.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
  21. 21.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  22. 22.True or false: detergent water is a base. (a) True (b) False
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
  24. 24.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) a magnet (d) an indicator
  25. 25.🫧 Which of these is neutral? (a) detergent water (b) lemon juice (c) plain water (d) curd
  26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
  27. 27.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
  28. 28.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  29. 29.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
  30. 30.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) a magnet (d) lemon juice
  31. 31.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  32. 32.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
  34. 34.🫧 Which of these is neutral? (a) sugar water (b) curd (c) tamarind water (d) orange juice
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) water (d) a dropper or spoon
  36. 36.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  37. 37.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) soap solution (d) baking soda water
  38. 38.True or false: salt water keeps turmeric yellow. (a) True (b) False
  39. 39.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue

Answer key

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

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