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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 446 · 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 liquid we test is kept the same. (a) True (b) False
  2. 2.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  3. 3.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  4. 4.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) tamarind water (d) detergent water
  5. 5.⚖️ 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 light we look in (c) the turmeric paper (d) the liquid we test
  6. 6.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
  7. 7.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  8. 8.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  9. 9.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  10. 10.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) a comb (d) lemon juice
  11. 11.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
  12. 12.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
  13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) lemon juice (d) yeast
  14. 14.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
  15. 15.True or false: lemon juice is a base. (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) a balloon
  17. 17.True or false: water is not needed for the turmeric test. (a) False (b) True
  18. 18.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  19. 19.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) an indicator (d) a magnet
  20. 20.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  21. 21.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
  22. 22.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  23. 23.⚖️ 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 change it (c) we measure it
  24. 24.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  25. 25.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
  26. 26.🫧 Which of these is an acid? (a) sugar water (b) detergent water (c) baking soda water (d) curd
  27. 27.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  28. 28.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  29. 29.True or false: curd is a base. (a) True (b) False
  30. 30.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  31. 31.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  32. 32.🫧 Which of these is an acid? (a) lemon juice (b) plain water (c) sugar water (d) detergent water
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
  34. 34.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  35. 35.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
  37. 37.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
  38. 38.True or false: plain water keeps turmeric yellow. (a) False (b) True
  39. 39.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
  40. 40.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False

Answer key

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

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