Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 458 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
3. 3.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
4. 4.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
5. 5.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a comb (c) a magnet (d) yeast
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.True or false: a comb is needed for the turmeric test. (a) True (b) False
9. 9.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) yeast (c) a battery cell (d) a mirror
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
11. 11.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
12. 12.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
14. 14.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) baking soda water (d) salt water
16. 16.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
17. 17.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
18. 18.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
19. 19.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a dropper or spoon (d) a balloon
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) soap solution (d) plain water
24. 24.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
25. 25.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) soap solution (c) detergent water (d) baking soda water
26. 26.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
27. 27.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
28. 28.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) soap solution (d) a mirror
30. 30.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
31. 31.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) yeast (d) a dropper or spoon
32. 32.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) lemon juice (d) yeast
33. 33.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
34. 34.True or false: salt water is an acid. (a) False (b) True
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) water (c) turmeric powder (d) a dropper or spoon
36. 36.⚖️ 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
37. 37.⚖️ 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 change it (c) we measure it
38. 38.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) a pulley (d) an indicator
39. 39.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) soap solution (c) white paper strips (d) water
40. 40.True or false: a balloon is needed for the turmeric test. (a) True (b) False

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