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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 479 · 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.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  2. 2.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  3. 3.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  4. 4.⚖️ 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
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
  7. 7.⚖️ 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
  8. 8.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
  9. 9.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) salt water (d) tamarind water
  10. 10.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
  11. 11.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  12. 12.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
  14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
  16. 16.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
  17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  18. 18.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
  19. 19.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a mirror (d) a magnet
  20. 20.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
  21. 21.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) salt water (c) baking soda water (d) soap solution
  22. 22.True or false: vinegar is an acid. (a) False (b) True
  23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  24. 24.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
  25. 25.🫧 Which of these is neutral? (a) vinegar (b) plain water (c) baking soda water (d) orange juice
  26. 26.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
  27. 27.True or false: salt water is a base. (a) True (b) False
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
  29. 29.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
  30. 30.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
  31. 31.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  32. 32.🔍 Which is the odd one out? (a) tamarind water (b) plain water (c) vinegar (d) soap solution
  33. 33.True or false: baking soda water is neutral. (a) False (b) True
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
  35. 35.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
  36. 36.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  37. 37.⚖️ 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 number of drops (c) the liquid we test (d) the turmeric paper
  38. 38.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) baking soda water (d) detergent water
  39. 39.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
  40. 40.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed

Answer key

  1. True
  2. turns reddish-brown
  3. turns reddish-brown
  4. we keep it the same
  5. False
  6. we change it
  7. True
  8. vinegar
  9. tamarind water
  10. turns reddish-brown
  11. False
  12. an acid
  13. we keep it the same
  14. reddish-brown
  15. the number of drops
  16. salt water
  17. True
  18. False
  19. lemon juice
  20. vinegar
  21. salt water
  22. True
  23. False
  24. True
  25. plain water
  26. use only kitchen items
  27. False
  28. False
  29. reddish
  30. True
  31. not needed
  32. soap solution
  33. False
  34. the turmeric paper
  35. False
  36. True
  37. the liquid we test
  38. lemon juice
  39. stays yellow
  40. needed

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