Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 198 · 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.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
4. 4.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
5. 5.🫧 Which of these is a base? (a) plain water (b) sugar water (c) lemon juice (d) soap solution
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) white paper strips (c) turmeric powder (d) a dropper or spoon
7. 7.True or false: sugar water keeps turmeric yellow. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) vinegar (d) salt water
9. 9.True or false: a comb is needed for the turmeric test. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in
11. 11.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
12. 12.True or false: water is not needed for the turmeric test. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
14. 14.True or false: salt water is neutral. (a) False (b) True
15. 15.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it turns blue (d) it disappears
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
18. 18.⚖️ 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
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) yeast (d) lemon juice
21. 21.True or false: soap solution keeps turmeric yellow. (a) True (b) False
22. 22.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
24. 24.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
25. 25.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) vinegar
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
27. 27.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) baking soda water (d) detergent water
28. 28.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
29. 29.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
30. 30.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
31. 31.🫧 Which of these is neutral? (a) tamarind water (b) lemon juice (c) curd (d) sugar water
32. 32.🍋 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
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the liquid we test (d) the colour we see
34. 34.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
35. 35.True or false: soap solution is needed for the turmeric test. (a) False (b) True
36. 36.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
37. 37.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
38. 38.🫧 Which of these is an acid? (a) soap solution (b) curd (c) baking soda water (d) salt water
39. 39.⚖️ 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
40. 40.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid

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