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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 295 · 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) soap solution (b) yeast (c) white paper strips (d) water
  2. 2.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
  3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
  5. 5.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
  6. 6.True or false: soap solution keeps turmeric yellow. (a) True (b) False
  7. 7.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) detergent water (d) baking soda water
  8. 8.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) soap solution (d) a magnet
  9. 9.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) turmeric powder (d) a mirror
  10. 10.True or false: water is not needed for the turmeric test. (a) True (b) False
  11. 11.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
  12. 12.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
  14. 14.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  15. 15.⚖️ 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 turmeric paper (c) the light we look in (d) the liquid we test
  16. 16.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
  17. 17.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
  18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) water (d) soap solution
  19. 19.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
  20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
  21. 21.🫧 Which of these is a base? (a) salt water (b) detergent water (c) vinegar (d) sugar water
  22. 22.True or false: soap solution is needed for the turmeric test. (a) False (b) True
  23. 23.True or false: water is needed for the turmeric test. (a) True (b) False
  24. 24.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) lemon juice (d) sugar water
  25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
  26. 26.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
  27. 27.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  28. 28.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
  29. 29.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
  30. 30.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) lemon juice (d) baking soda water
  31. 31.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
  32. 32.True or false: tamarind water is neutral. (a) True (b) False
  33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) white paper strips (d) lemon juice
  34. 34.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) turmeric powder (d) a mirror
  35. 35.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
  36. 36.True or false: soap solution is an acid. (a) False (b) True
  37. 37.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  38. 38.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
  39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
  40. 40.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True

Answer key

  1. yeast
  2. not needed
  3. reddish
  4. True
  5. stays yellow
  6. False
  7. sugar water
  8. soap solution
  9. turmeric powder
  10. False
  11. needed
  12. True
  13. True
  14. False
  15. the liquid we test
  16. an indicator
  17. reddish-brown
  18. a mirror
  19. stays yellow
  20. False
  21. detergent water
  22. True
  23. True
  24. detergent water
  25. an old shirt or apron
  26. turns reddish-brown
  27. False
  28. tamarind water
  29. stays yellow
  30. baking soda water
  31. True
  32. False
  33. a comb
  34. a mirror
  35. lemon juice
  36. False
  37. not needed
  38. stays yellow
  39. False
  40. False

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