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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 863 · 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.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) sugar water
  2. 2.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  3. 3.True or false: yeast is not needed for the turmeric test. (a) True (b) False
  4. 4.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
  5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
  6. 6.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) curd (d) soap solution
  7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
  8. 8.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
  9. 9.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
  10. 10.True or false: water is not needed for the turmeric test. (a) False (b) True
  11. 11.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
  12. 12.🧺 Which of these is needed for the turmeric test? (a) yeast (b) lemon juice (c) a magnet (d) a balloon
  13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it turns blue (d) it stays yellow
  14. 14.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
  15. 15.True or false: lemon juice is an acid. (a) False (b) True
  16. 16.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) turmeric powder (d) a balloon
  17. 17.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
  18. 18.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
  19. 19.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
  20. 20.True or false: tamarind water is neutral. (a) True (b) False
  21. 21.True or false: vinegar is neutral. (a) True (b) False
  22. 22.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
  23. 23.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  24. 24.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  25. 25.True or false: salt water is neutral. (a) False (b) True
  26. 26.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) water (c) lemon juice (d) soap solution
  27. 27.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) water (d) white paper strips
  29. 29.True or false: curd is an acid. (a) False (b) True
  30. 30.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
  31. 31.True or false: lemon juice is neutral. (a) True (b) False
  32. 32.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
  34. 34.⚖️ 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 liquid we test (d) the number of drops
  35. 35.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
  36. 36.True or false: orange juice is a base. (a) True (b) False
  37. 37.🟡 Which of these keeps turmeric yellow? (a) plain water (b) detergent water (c) soap solution (d) baking soda water
  38. 38.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) yeast (d) water
  39. 39.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  40. 40.🫧 Which of these is an acid? (a) soap solution (b) orange juice (c) detergent water (d) plain water

Answer key

  1. sugar water
  2. not needed
  3. True
  4. not needed
  5. it stays yellow
  6. curd
  7. the light we look in
  8. vinegar
  9. an indicator
  10. False
  11. turns reddish-brown
  12. lemon juice
  13. reddish-brown
  14. an old shirt or apron
  15. True
  16. turmeric powder
  17. False
  18. reddish-brown
  19. use only kitchen items
  20. False
  21. False
  22. False
  23. an acid
  24. not needed
  25. True
  26. a mirror
  27. turns reddish-brown
  28. a mirror
  29. True
  30. tamarind water
  31. False
  32. needed
  33. False
  34. the colour we see
  35. reddish
  36. False
  37. plain water
  38. water
  39. not needed
  40. orange juice

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