Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 49 · 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.⚖️ 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
2. 2.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) tamarind water (d) baking soda water
3. 3.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) lemon juice (d) soap solution
5. 5.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) green (d) bright blue
6. 6.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
7. 7.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
8. 8.True or false: vinegar keeps turmeric yellow. (a) True (b) False
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a balloon (d) lemon juice
10. 10.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) a mirror (d) a dropper or spoon
11. 11.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
12. 12.🫧 Which of these is a base? (a) tamarind water (b) curd (c) orange juice (d) detergent water
13. 13.True or false: plain water keeps turmeric yellow. (a) True (b) False
14. 14.🛟 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
15. 15.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
18. 18.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
19. 19.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
21. 21.🫧 Which of these is neutral? (a) lemon juice (b) tamarind water (c) salt water (d) curd
22. 22.True or false: water is not needed for the turmeric test. (a) False (b) True
23. 23.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
24. 24.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.True or false: curd is an acid. (a) False (b) True
26. 26.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
27. 27.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
31. 31.🫧 Which of these is neutral? (a) detergent water (b) plain water (c) lemon juice (d) baking soda water
32. 32.🫧 Which of these is an acid? (a) soap solution (b) lemon juice (c) detergent water (d) plain water
33. 33.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
34. 34.True or false: a comb is needed for the turmeric test. (a) False (b) True
35. 35.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
36. 36.⚖️ 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
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
39. 39.⚖️ 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 turmeric paper
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) turmeric powder (d) a magnet

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