Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 756 · 40 questions

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.

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

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