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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 255 · 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? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
  2. 2.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  3. 3.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
  5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
  6. 6.True or false: soap solution is a base. (a) False (b) True
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the light we look in (d) the colour we see
  8. 8.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) sugar water (d) tamarind water
  9. 9.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
  11. 11.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) soap solution (d) salt water
  12. 12.⚖️ 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
  13. 13.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
  14. 14.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  15. 15.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  16. 16.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  18. 18.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
  20. 20.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
  21. 21.True or false: vinegar is a base. (a) True (b) False
  22. 22.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  23. 23.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  24. 24.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  25. 25.🫧 Which of these is an acid? (a) curd (b) salt water (c) baking soda water (d) sugar water
  26. 26.True or false: salt water is an acid. (a) True (b) False
  27. 27.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
  28. 28.True or false: plain water is neutral. (a) False (b) True
  29. 29.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  30. 30.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
  31. 31.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  32. 32.True or false: baking soda water is a base. (a) True (b) False
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) turmeric powder (d) a dropper or spoon
  34. 34.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a magnet (c) a dropper or spoon (d) turmeric powder
  35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) turmeric powder (d) a battery cell
  36. 36.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
  37. 37.True or false: soap solution is neutral. (a) True (b) False
  38. 38.🫧 Which of these is a base? (a) detergent water (b) curd (c) sugar water (d) plain water
  39. 39.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  40. 40.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) orange juice (d) soap solution

Answer key

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

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