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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 234 · 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.🍋 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
  2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
  3. 3.True or false: sugar water is neutral. (a) False (b) True
  4. 4.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
  5. 5.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
  6. 6.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  7. 7.⚖️ 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 liquid we test (c) the number of drops (d) the turmeric paper
  8. 8.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  9. 9.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) vinegar (d) soap solution
  10. 10.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns blue (c) it disappears (d) it turns darker red
  11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
  13. 13.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
  14. 14.True or false: lemon juice is a base. (a) True (b) False
  15. 15.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
  16. 16.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) turmeric powder (c) water (d) soap solution
  17. 17.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
  18. 18.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) baking soda water (c) sugar water (d) vinegar
  19. 19.⚖️ 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
  20. 20.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  21. 21.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  22. 22.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
  23. 23.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  24. 24.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) plain water (d) tamarind water
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
  26. 26.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  27. 27.True or false: salt water is neutral. (a) True (b) False
  28. 28.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) vinegar (d) lemon juice
  29. 29.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) yeast (d) soap solution
  30. 30.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
  31. 31.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  32. 32.True or false: salt water is an acid. (a) True (b) False
  33. 33.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see
  35. 35.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  36. 36.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a magnet (d) a pulley
  37. 37.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
  38. 38.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
  39. 39.⚖️ 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
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False

Answer key

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

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