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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 831 · 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 of these is needed for the turmeric test? (a) yeast (b) a comb (c) a magnet (d) water
  2. 2.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  3. 3.🔮 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
  4. 4.🫧 Which of these is an acid? (a) tamarind water (b) plain water (c) baking soda water (d) sugar water
  5. 5.⚖️ 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
  6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) lemon juice (d) soap solution
  8. 8.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
  9. 9.True or false: salt water keeps turmeric yellow. (a) True (b) False
  10. 10.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
  11. 11.⚖️ 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 light we look in (c) the turmeric paper (d) the liquid we test
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
  13. 13.🫧 Which of these is an acid? (a) plain water (b) salt water (c) detergent water (d) lemon juice
  14. 14.🛟 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
  15. 15.🧺 Which of these is not needed for the turmeric test? (a) water (b) lemon juice (c) a battery cell (d) soap solution
  16. 16.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
  17. 17.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
  18. 18.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a prism (d) a magnet
  19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
  20. 20.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
  21. 21.True or false: tamarind water is neutral. (a) True (b) False
  22. 22.🍋 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
  23. 23.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) salt water (d) lemon juice
  24. 24.True or false: salt water is neutral. (a) True (b) False
  25. 25.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  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 number of drops (c) the liquid we test (d) the turmeric paper
  27. 27.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
  28. 28.True or false: a comb is not needed for the turmeric test. (a) False (b) True
  29. 29.True or false: sugar water is an acid. (a) False (b) True
  30. 30.True or false: soap solution is needed for the turmeric test. (a) True (b) False
  31. 31.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
  32. 32.True or false: vinegar is an acid. (a) True (b) False
  33. 33.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
  34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
  35. 35.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
  36. 36.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) bright blue (d) reddish-brown
  37. 37.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  38. 38.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) soap solution (c) a mirror (d) a balloon
  39. 39.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
  40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green

Answer key

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

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