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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 307 · 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.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
  2. 2.⚖️ 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
  3. 3.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) lemon juice (d) baking soda water
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  5. 5.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
  7. 7.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) detergent water (c) salt water (d) plain water
  8. 8.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
  9. 9.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
  10. 10.True or false: curd is an acid. (a) True (b) False
  11. 11.True or false: soap solution keeps turmeric yellow. (a) False (b) True
  12. 12.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) white paper strips (d) a magnet
  13. 13.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  14. 14.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
  15. 15.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
  16. 16.True or false: tamarind water is a base. (a) True (b) False
  17. 17.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
  18. 18.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
  19. 19.🫧 Which of these is neutral? (a) soap solution (b) vinegar (c) plain water (d) baking soda water
  20. 20.True or false: detergent water is neutral. (a) False (b) True
  21. 21.True or false: plain water keeps turmeric yellow. (a) False (b) True
  22. 22.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) detergent water (d) baking soda water
  23. 23.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) an indicator (d) a magnet
  24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) bright blue (d) reddish
  25. 25.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) turmeric powder (c) a balloon (d) a battery cell
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
  28. 28.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
  29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) lemon juice (d) a balloon
  30. 30.🔮 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
  31. 31.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
  32. 32.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) plain water (d) vinegar
  33. 33.True or false: curd is neutral. (a) False (b) True
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the turmeric paper
  37. 37.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
  38. 38.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
  39. 39.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  40. 40.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False

Answer key

  1. an old shirt or apron
  2. False
  3. lemon juice
  4. we keep it the same
  5. stays yellow
  6. we measure it
  7. detergent water
  8. not needed
  9. False
  10. True
  11. False
  12. white paper strips
  13. neutral
  14. tamarind water
  15. use only kitchen items
  16. False
  17. False
  18. stays yellow
  19. plain water
  20. False
  21. True
  22. lemon juice
  23. an indicator
  24. reddish
  25. turmeric powder
  26. True
  27. vinegar
  28. neutral
  29. a balloon
  30. it stays yellow
  31. needed
  32. soap solution
  33. False
  34. the colour we see
  35. False
  36. the liquid we test
  37. turns reddish-brown
  38. an acid
  39. True
  40. False

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