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

Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 687 · 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: a dropper or spoon is needed for the turmeric test. (a) False (b) True
  2. 2.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a battery cell (c) lemon juice (d) a dropper or spoon
  3. 3.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
  4. 4.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  5. 5.True or false: curd is a base. (a) False (b) True
  6. 6.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  7. 7.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) a magnet (d) an indicator
  8. 8.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) sugar water (c) vinegar (d) plain water
  9. 9.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  10. 10.True or false: detergent water is a base. (a) True (b) False
  11. 11.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
  12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) water (d) a comb
  13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) soap solution (d) sugar water
  14. 14.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap water is a base (d) soap is magnetic
  15. 15.🫧 Which of these is an acid? (a) soap solution (b) plain water (c) orange juice (d) detergent water
  16. 16.True or false: curd is neutral. (a) False (b) True
  17. 17.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) yeast (d) soap solution
  19. 19.⚖️ 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 number of drops
  20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
  21. 21.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) tamarind water (d) sugar water
  22. 22.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a mirror (d) soap solution
  23. 23.True or false: yeast is needed for the turmeric test. (a) False (b) True
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
  25. 25.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
  26. 26.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
  27. 27.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
  29. 29.True or false: detergent water is an acid. (a) True (b) False
  30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
  31. 31.True or false: vinegar is an acid. (a) True (b) False
  32. 32.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) a magnet (d) soap solution
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a battery cell (d) turmeric powder
  34. 34.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) soap solution (d) yeast
  35. 35.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
  36. 36.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
  38. 38.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
  39. 39.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a dropper or spoon (d) a magnet

Answer key

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

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