Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 488 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) white paper strips (d) water
2. 2.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
3. 3.🛟 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
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
7. 7.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
8. 8.🧺 Which of these is needed for the turmeric test? (a) a comb (b) soap solution (c) a balloon (d) a magnet
9. 9.True or false: tamarind water is an acid. (a) True (b) False
10. 10.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) water (d) soap solution
11. 11.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
12. 12.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
13. 13.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.True or false: lemon juice is a base. (a) True (b) False
16. 16.True or false: detergent water is neutral. (a) False (b) True
17. 17.True or false: sugar water is neutral. (a) False (b) True
18. 18.⚖️ 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 measure it (c) we change it
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
22. 22.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) water (d) a balloon
25. 25.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
26. 26.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) water (d) a magnet
27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
28. 28.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
29. 29.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) lemon juice (d) baking soda water
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the liquid we test
33. 33.🫧 Which of these is a base? (a) plain water (b) curd (c) baking soda water (d) orange juice
34. 34.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.True or false: soap solution keeps turmeric yellow. (a) True (b) False
36. 36.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
37. 37.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) lemon juice (c) white paper strips (d) water
38. 38.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
39. 39.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
40. 40.True or false: salt water is a base. (a) False (b) True

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