Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 733 · 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.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) vinegar (d) soap solution
3. 3.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a magnet (d) a prism
4. 4.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) lemon juice (d) white paper strips
6. 6.True or false: salt water is a base. (a) False (b) True
7. 7.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a balloon (d) a magnet
9. 9.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
10. 10.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) a dropper or spoon (d) a balloon
11. 11.🫧 Which of these is neutral? (a) plain water (b) baking soda water (c) orange juice (d) vinegar
12. 12.🫧 Which of these is a base? (a) soap solution (b) plain water (c) lemon juice (d) vinegar
13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
14. 14.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
15. 15.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) salt water (d) curd
16. 16.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) salt water (d) detergent water
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) sugar water (d) lemon juice
20. 20.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
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 keep it the same (c) we measure it
23. 23.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a magnet (d) lemon juice
24. 24.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) lemon juice (d) baking soda water
25. 25.True or false: soap solution keeps turmeric yellow. (a) True (b) False
26. 26.⚖️ 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 light we look in (d) the liquid we test
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a magnet (d) turmeric powder
28. 28.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
30. 30.True or false: baking soda water is neutral. (a) False (b) True
31. 31.⚖️ 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 measure it (c) we change it
32. 32.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
33. 33.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
34. 34.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) lemon juice (d) white paper strips
36. 36.True or false: tamarind water is a base. (a) False (b) True
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
38. 38.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
39. 39.True or false: plain water is neutral. (a) True (b) False
40. 40.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns yellow again (d) it turns darker red

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