Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 300 · 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.True or false: lemon juice is a base. (a) True (b) False
2. 2.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) a magnet (d) an indicator
3. 3.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) yeast (d) soap solution
6. 6.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
7. 7.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) a balloon (d) soap solution
9. 9.⚖️ 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
10. 10.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) baking soda water (d) orange juice
11. 11.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
12. 12.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the turmeric paper (d) the number of drops
14. 14.True or false: curd is an acid. (a) True (b) False
15. 15.True or false: tamarind water is a base. (a) False (b) True
16. 16.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a battery cell (d) turmeric powder
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
20. 20.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
21. 21.True or false: vinegar is a base. (a) True (b) False
22. 22.⚖️ 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
23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
24. 24.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
25. 25.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
26. 26.True or false: water is not needed for the turmeric test. (a) False (b) True
27. 27.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) a battery cell (d) soap solution
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
29. 29.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) lemon juice (d) soap solution
31. 31.True or false: yeast is needed for the turmeric test. (a) False (b) True
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
33. 33.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
34. 34.⚖️ 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 turmeric paper (c) the number of drops (d) the liquid we test
35. 35.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
37. 37.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
38. 38.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
39. 39.🫧 Which of these is a base? (a) plain water (b) salt water (c) curd (d) soap solution
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False

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