Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 156 · 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.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
2. 2.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
3. 3.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) turmeric powder (d) a balloon
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) baking soda water (c) tamarind water (d) plain water
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) lemon juice (d) yeast
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) turmeric powder (d) white paper strips
8. 8.🫧 Which of these is an acid? (a) tamarind water (b) soap solution (c) plain water (d) baking soda water
9. 9.🫧 Which of these is neutral? (a) orange juice (b) lemon juice (c) plain water (d) curd
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) turmeric powder (d) a magnet
11. 11.🫧 Which of these is a base? (a) curd (b) orange juice (c) plain water (d) baking soda water
12. 12.⚖️ 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
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
14. 14.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
15. 15.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
17. 17.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
18. 18.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) lemon juice (d) yeast
19. 19.⚖️ 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
20. 20.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
21. 21.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) turmeric powder (d) water
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) detergent water (c) vinegar (d) lemon juice
24. 24.🔍 Which is the odd one out? (a) salt water (b) plain water (c) vinegar (d) soap solution
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
28. 28.🫧 Which of these is a base? (a) orange juice (b) salt water (c) lemon juice (d) detergent water
29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
30. 30.🫧 Which of these is an acid? (a) plain water (b) sugar water (c) soap solution (d) vinegar
31. 31.True or false: sugar water is a base. (a) False (b) True
32. 32.🫧 Which of these is an acid? (a) lemon juice (b) soap solution (c) detergent water (d) sugar water
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a mirror (d) a dropper or spoon
35. 35.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a magnet (c) water (d) turmeric powder
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in
37. 37.🫧 Which of these is an acid? (a) plain water (b) sugar water (c) orange juice (d) baking soda water
38. 38.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) an indicator (d) a prism
39. 39.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
40. 40.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid

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