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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 722 · 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 of these turns turmeric reddish-brown? (a) baking soda water (b) sugar water (c) plain water (d) lemon juice
  2. 2.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  3. 3.True or false: vinegar keeps turmeric yellow. (a) True (b) False
  4. 4.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) soap solution (d) a balloon
  6. 6.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) lemon juice (d) baking soda water
  7. 7.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
  8. 8.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  9. 9.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
  10. 10.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  11. 11.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
  12. 12.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) vinegar (d) sugar water
  13. 13.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  14. 14.True or false: plain water is a base. (a) False (b) True
  15. 15.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) a battery cell (d) a magnet
  16. 16.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  17. 17.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  18. 18.True or false: vinegar is a base. (a) False (b) True
  19. 19.📘 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
  20. 20.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) plain water (d) salt water
  21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) white paper strips (d) soap solution
  22. 22.True or false: sugar water is neutral. (a) False (b) True
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) turmeric powder (d) white paper strips
  24. 24.True or false: orange juice is a base. (a) False (b) True
  25. 25.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the liquid we test (d) the light we look in
  27. 27.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
  28. 28.🫧 Which of these is neutral? (a) plain water (b) lemon juice (c) curd (d) vinegar
  29. 29.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  30. 30.True or false: salt water is a base. (a) False (b) True
  31. 31.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  32. 32.🧺 Which of these is needed for the turmeric test? (a) water (b) a magnet (c) a comb (d) yeast
  33. 33.True or false: a comb is needed for the turmeric test. (a) True (b) False
  34. 34.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  35. 35.🫧 Which of these is a base? (a) detergent water (b) curd (c) plain water (d) vinegar
  36. 36.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
  37. 37.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
  40. 40.⚖️ 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

Answer key

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

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