Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 586 · 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) soap solution (b) plain water (c) tamarind water (d) salt water
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the liquid we test (d) the light we look in
4. 4.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
5. 5.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) white paper strips (d) water
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) turmeric powder (d) lemon juice
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
8. 8.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ 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
11. 11.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the liquid we test
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) white paper strips (d) turmeric powder
14. 14.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) baking soda water (d) tamarind water
15. 15.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
16. 16.⚖️ 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
17. 17.🫧 Which of these is a base? (a) plain water (b) detergent water (c) tamarind water (d) curd
18. 18.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
19. 19.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) water (d) turmeric powder
20. 20.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
21. 21.True or false: detergent water is a base. (a) True (b) False
22. 22.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) water (d) a battery cell
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) sugar water (d) soap solution
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 measure it (c) we keep it the same
27. 27.True or false: curd is an acid. (a) True (b) False
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a magnet (d) white paper strips
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
30. 30.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) salt water
31. 31.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) turmeric powder (d) a mirror
32. 32.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
33. 33.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.True or false: curd is neutral. (a) False (b) True
36. 36.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
37. 37.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
38. 38.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
39. 39.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue

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