Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 827 · 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 turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
2. 2.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) a dropper or spoon (d) a comb
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧺 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) turmeric powder
5. 5.True or false: salt water is an acid. (a) True (b) False
6. 6.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
7. 7.⚖️ 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 change it (c) we measure it
8. 8.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) water (c) a mirror (d) a magnet
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) vinegar (c) lemon juice (d) tamarind water
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
13. 13.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
14. 14.🫧 Which of these is a base? (a) detergent water (b) curd (c) tamarind water (d) vinegar
15. 15.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
16. 16.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
17. 17.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
18. 18.🫧 Which of these is a base? (a) curd (b) baking soda water (c) sugar water (d) lemon juice
19. 19.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
20. 20.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns yellow again (d) it turns darker red
21. 21.True or false: orange juice is an acid. (a) False (b) True
22. 22.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
24. 24.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) soap solution (c) a magnet (d) a comb
25. 25.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
27. 27.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a battery cell (d) water
28. 28.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
29. 29.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a battery cell (d) white paper strips
30. 30.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) lemon juice (d) soap solution
31. 31.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
32. 32.🔮 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
33. 33.🔮 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
34. 34.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
35. 35.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
37. 37.True or false: a magnet is needed for the turmeric test. (a) False (b) True
38. 38.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
39. 39.True or false: soap solution is an acid. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) salt water (d) detergent water

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