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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 482 · 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.

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

Answer key

  1. a mirror
  2. True
  3. use only kitchen items
  4. False
  5. False
  6. False
  7. True
  8. soap solution
  9. needed
  10. we keep it the same
  11. it stays yellow
  12. turns reddish-brown
  13. a comb
  14. False
  15. reddish-brown
  16. False
  17. tamarind water
  18. baking soda water
  19. baking soda water
  20. salt water
  21. True
  22. a balloon
  23. False
  24. a balloon
  25. a dropper or spoon
  26. we change it
  27. reddish-brown
  28. an indicator
  29. plain water
  30. True
  31. an old shirt or apron
  32. not needed
  33. turmeric powder
  34. the turmeric paper
  35. True
  36. soap solution
  37. needed
  38. False
  39. True
  40. a base

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