Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 938 · 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.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
2. 2.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) baking soda water (d) orange juice
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the turmeric paper (d) the number of drops
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
6. 6.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
7. 7.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) lemon juice (d) a dropper or spoon
10. 10.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
13. 13.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
14. 14.🫧 Which of these is neutral? (a) lemon juice (b) tamarind water (c) vinegar (d) salt water
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) salt water (d) baking soda water
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) yeast
17. 17.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
18. 18.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
19. 19.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
20. 20.⚖️ 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
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
22. 22.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a magnet (d) a battery cell
23. 23.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap water is a base (d) soap is an acid
24. 24.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
25. 25.⚖️ 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 liquid we test (c) the colour we see (d) the turmeric paper
26. 26.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
27. 27.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
28. 28.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
29. 29.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.True or false: a comb is needed for the turmeric test. (a) True (b) False
31. 31.True or false: detergent water keeps turmeric yellow. (a) True (b) False
32. 32.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a pulley (d) a prism
33. 33.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a mirror (c) a battery cell (d) a balloon
34. 34.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) white paper strips (d) a balloon
35. 35.True or false: plain water is a base. (a) False (b) True
36. 36.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it disappears (d) it turns blue
37. 37.🫧 Which of these is an acid? (a) soap solution (b) plain water (c) salt water (d) curd
38. 38.🫧 Which of these is a base? (a) soap solution (b) salt water (c) orange juice (d) tamarind water
39. 39.True or false: yeast is not needed for the turmeric test. (a) True (b) False
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in

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