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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 988 · 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) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
  2. 2.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) bright blue (d) white at once
  3. 3.⚖️ 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
  4. 4.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
  5. 5.True or false: vinegar is a base. (a) False (b) True
  6. 6.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
  7. 7.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) detergent water (d) tamarind water
  8. 8.⚖️ 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
  9. 9.True or false: a comb is needed for the turmeric test. (a) False (b) True
  10. 10.True or false: water is needed for the turmeric test. (a) True (b) False
  11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) lemon juice (d) white paper strips
  12. 12.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) plain water
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the liquid we test (d) the number of drops
  14. 14.🔍 Which is the odd one out? (a) detergent water (b) tamarind water (c) baking soda water (d) soap solution
  15. 15.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  16. 16.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
  17. 17.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) white paper strips (d) a battery cell
  18. 18.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
  19. 19.True or false: baking soda water is an acid. (a) True (b) False
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  21. 21.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) your school uniform (d) a white party dress
  22. 22.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  23. 23.⚖️ 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
  24. 24.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  25. 25.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) water (d) a magnet
  26. 26.🫧 Which of these is a base? (a) salt water (b) soap solution (c) sugar water (d) tamarind water
  27. 27.True or false: detergent water is a base. (a) False (b) True
  28. 28.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) sugar water
  29. 29.True or false: soap solution is a base. (a) False (b) True
  30. 30.True or false: plain water keeps turmeric yellow. (a) False (b) True
  31. 31.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) baking soda water (d) sugar water
  32. 32.🫧 Which of these is a base? (a) lemon juice (b) sugar water (c) baking soda water (d) orange juice
  33. 33.🫧 Which of these is an acid? (a) plain water (b) lemon juice (c) soap solution (d) detergent water
  34. 34.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
  35. 35.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
  36. 36.🔍 Which is the odd one out? (a) lemon juice (b) salt water (c) sugar water (d) baking soda water
  37. 37.True or false: orange juice is a base. (a) True (b) False
  38. 38.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  39. 39.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
  40. 40.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown

Answer key

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

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