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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 810 · 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: orange juice is an acid. (a) True (b) False
  2. 2.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
  4. 4.True or false: vinegar is an acid. (a) True (b) False
  5. 5.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
  6. 6.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
  7. 7.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
  8. 8.⚖️ 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
  9. 9.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) salt water (d) detergent water
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  12. 12.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  14. 14.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) tamarind water (d) detergent water
  15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) turmeric powder (d) water
  16. 16.🫧 Which of these is a base? (a) plain water (b) soap solution (c) vinegar (d) orange juice
  17. 17.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
  18. 18.True or false: lemon juice is an acid. (a) False (b) True
  19. 19.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  20. 20.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) white paper strips (d) soap solution
  21. 21.🫧 Which of these is a base? (a) curd (b) plain water (c) sugar water (d) baking soda water
  22. 22.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  23. 23.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) water (c) lemon juice (d) soap solution
  24. 24.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a magnet (c) a mirror (d) a comb
  25. 25.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
  26. 26.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
  27. 27.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  28. 28.True or false: yeast is not needed for the turmeric test. (a) False (b) True
  29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
  30. 30.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) a battery cell (d) white paper strips
  31. 31.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
  32. 32.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
  33. 33.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  34. 34.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) baking soda water (d) vinegar
  35. 35.🫧 Which of these is neutral? (a) detergent water (b) soap solution (c) sugar water (d) vinegar
  36. 36.⚖️ 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
  37. 37.🫧 Which of these is neutral? (a) vinegar (b) orange juice (c) plain water (d) baking soda water
  38. 38.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
  39. 39.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) baking soda water (d) sugar water
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False

Answer key

  1. True
  2. stays yellow
  3. the turmeric paper
  4. True
  5. an acid
  6. True
  7. it stays yellow
  8. the number of drops
  9. False
  10. salt water
  11. True
  12. reddish-brown
  13. True
  14. detergent water
  15. a magnet
  16. soap solution
  17. True
  18. True
  19. a base
  20. a magnet
  21. baking soda water
  22. False
  23. yeast
  24. white paper strips
  25. it stays yellow
  26. an old shirt or apron
  27. turns reddish-brown
  28. True
  29. we change it
  30. a battery cell
  31. use only kitchen items
  32. needed
  33. not needed
  34. baking soda water
  35. sugar water
  36. we measure it
  37. plain water
  38. not needed
  39. baking soda water
  40. False

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