Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 400 · 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 is the odd one out? (a) plain water (b) lemon juice (c) vinegar (d) detergent water
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) tamarind water (d) detergent water
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) salt water (d) soap solution
5. 5.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
6. 6.True or false: sugar water is an acid. (a) False (b) True
7. 7.True or false: detergent water is neutral. (a) True (b) False
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) a dropper or spoon (c) soap solution (d) turmeric powder
10. 10.🫧 Which of these is a base? (a) vinegar (b) sugar water (c) plain water (d) soap solution
11. 11.True or false: baking soda water is neutral. (a) False (b) True
12. 12.⚖️ 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
13. 13.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
14. 14.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
15. 15.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
17. 17.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
18. 18.⚖️ 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 measure it (c) we change it
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) a mirror (d) white paper strips
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) turmeric powder (c) water (d) soap solution
24. 24.True or false: sugar water is neutral. (a) True (b) False
25. 25.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a mirror (d) turmeric powder
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
28. 28.True or false: vinegar is an acid. (a) True (b) False
29. 29.🫧 Which of these is a base? (a) detergent water (b) curd (c) orange juice (d) sugar water
30. 30.⚖️ 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
31. 31.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
32. 32.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🔮 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
34. 34.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a magnet (d) a dropper or spoon
35. 35.True or false: lemon juice is an acid. (a) False (b) True
36. 36.🫧 Which of these is neutral? (a) plain water (b) curd (c) baking soda water (d) tamarind water
37. 37.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
38. 38.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) vinegar
39. 39.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the number of drops (d) the light we look in

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