Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 133 · 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 is the odd one out? (a) plain water (b) sugar water (c) lemon juice (d) baking soda water
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) yeast (d) turmeric powder
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) soap solution (d) salt water
6. 6.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
7. 7.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns blue (d) it turns darker red
11. 11.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) plain water (d) soap solution
12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.⚖️ 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 number of drops (d) the turmeric paper
15. 15.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) water
16. 16.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
17. 17.True or false: plain water is neutral. (a) True (b) False
18. 18.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
20. 20.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
21. 21.True or false: curd is neutral. (a) True (b) False
22. 22.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) soap solution (d) orange juice
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) white paper strips (d) a dropper or spoon
26. 26.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
27. 27.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
28. 28.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
29. 29.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
30. 30.True or false: a mirror is needed for the turmeric test. (a) True (b) False
31. 31.True or false: salt water is neutral. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) tamarind water (d) detergent water
33. 33.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) plain water (d) vinegar
34. 34.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
35. 35.🛟 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
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
37. 37.True or false: yeast is needed for the turmeric test. (a) True (b) False
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.True or false: vinegar keeps turmeric yellow. (a) True (b) False
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the light we look in (d) the number of drops

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