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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 424 · 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: vinegar is an acid. (a) False (b) True
  2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
  3. 3.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
  4. 4.⚖️ 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 change it (c) we measure it
  5. 5.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  6. 6.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) soap solution
  7. 7.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) sugar water (d) detergent water
  8. 8.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
  9. 9.True or false: salt water is an acid. (a) False (b) True
  10. 10.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
  11. 11.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  12. 12.True or false: plain water keeps turmeric yellow. (a) False (b) True
  13. 13.⚖️ 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
  14. 14.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  15. 15.True or false: lemon juice is a base. (a) True (b) False
  16. 16.True or false: orange juice is neutral. (a) True (b) False
  17. 17.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
  18. 18.⚖️ 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
  19. 19.True or false: orange juice is an acid. (a) False (b) True
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
  21. 21.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
  22. 22.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) lemon juice (c) white paper strips (d) soap solution
  23. 23.🫧 Which of these is an acid? (a) tamarind water (b) baking soda water (c) plain water (d) sugar water
  24. 24.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
  25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the light we look in
  27. 27.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a comb (c) yeast (d) a mirror
  28. 28.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) soap solution (d) a balloon
  30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) white paper strips (d) water
  31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
  32. 32.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
  33. 33.True or false: water is not needed for the turmeric test. (a) False (b) True
  34. 34.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) baking soda water (d) lemon juice
  35. 35.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) an indicator (d) a prism
  36. 36.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) sugar water (d) baking soda water
  37. 37.🫧 Which of these is a base? (a) soap solution (b) vinegar (c) plain water (d) sugar water
  38. 38.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) sugar water
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
  40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False

Answer key

  1. True
  2. reddish-brown
  3. use only kitchen items
  4. we keep it the same
  5. turns reddish-brown
  6. soap solution
  7. detergent water
  8. True
  9. False
  10. an old shirt or apron
  11. neutral
  12. True
  13. the liquid we test
  14. True
  15. False
  16. False
  17. True
  18. the number of drops
  19. True
  20. the light we look in
  21. needed
  22. a battery cell
  23. tamarind water
  24. needed
  25. an acid
  26. the colour we see
  27. turmeric powder
  28. False
  29. a balloon
  30. a mirror
  31. False
  32. turns reddish-brown
  33. False
  34. baking soda water
  35. an indicator
  36. baking soda water
  37. soap solution
  38. sugar water
  39. False
  40. True

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