Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 355 · 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 not needed for the turmeric test? (a) turmeric powder (b) yeast (c) water (d) soap solution
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) plain water (c) lemon juice (d) sugar water
3. 3.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) salt water (d) orange juice
4. 4.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the number of drops
6. 6.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
7. 7.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) a magnet (d) water
8. 8.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
10. 10.True or false: baking soda water is a base. (a) False (b) True
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
12. 12.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) sugar water
13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
14. 14.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
15. 15.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) sugar water (d) vinegar
16. 16.True or false: water is needed for the turmeric test. (a) False (b) True
17. 17.True or false: plain water is neutral. (a) True (b) False
18. 18.True or false: a magnet is needed for the turmeric test. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) lemon juice (d) sugar water
20. 20.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) a balloon (d) turmeric powder
21. 21.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) a dropper or spoon (d) a magnet
22. 22.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
23. 23.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
24. 24.⚖️ 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 light we look in (c) the number of drops (d) the liquid we test
25. 25.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) tamarind water (d) vinegar
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) lemon juice (d) a battery cell
27. 27.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
28. 28.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
29. 29.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) detergent water (d) vinegar
30. 30.True or false: detergent water keeps turmeric yellow. (a) True (b) False
31. 31.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) turmeric powder (d) a mirror
33. 33.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a battery cell (d) turmeric powder
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) white paper strips (d) a balloon
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.True or false: orange juice is a base. (a) True (b) False
37. 37.🔮 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
38. 38.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a battery cell (c) white paper strips (d) water
40. 40.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base

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