Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 189 · 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) water (b) turmeric powder (c) lemon juice (d) a comb
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
3. 3.⚖️ 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 change it (c) we measure it
4. 4.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) tamarind water (d) detergent water
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the turmeric paper
6. 6.🫧 Which of these is neutral? (a) baking soda water (b) plain water (c) curd (d) lemon juice
7. 7.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
8. 8.True or false: a mirror is needed for the turmeric test. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) yeast (d) water
11. 11.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
12. 12.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a dropper or spoon (c) a mirror (d) a battery cell
13. 13.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) a balloon (d) soap solution
14. 14.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
16. 16.🫧 Which of these is a base? (a) sugar water (b) tamarind water (c) vinegar (d) baking soda water
17. 17.True or false: plain water is neutral. (a) True (b) False
18. 18.True or false: tamarind water is a base. (a) False (b) True
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) lemon juice (d) soap solution
20. 20.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
21. 21.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) white paper strips (d) a balloon
24. 24.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) salt water (d) detergent water
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the turmeric paper
26. 26.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
27. 27.🛟 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
28. 28.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a mirror (c) turmeric powder (d) lemon juice
32. 32.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) yeast (d) turmeric powder
33. 33.🫧 Which of these is an acid? (a) curd (b) baking soda water (c) salt water (d) sugar water
34. 34.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) salt water (d) plain water
35. 35.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) lemon juice (d) a comb
36. 36.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
40. 40.⚖️ 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

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