Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 308 · 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 rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) sugar water (d) lemon juice
3. 3.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
4. 4.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) lemon juice (d) a magnet
5. 5.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) white paper strips (d) lemon juice
6. 6.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) soap solution (d) salt water
7. 7.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
9. 9.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
11. 11.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) detergent water (c) tamarind water (d) sugar water
13. 13.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
16. 16.True or false: water is needed for the turmeric test. (a) False (b) True
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) water (d) white paper strips
18. 18.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) soap solution (d) a magnet
19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
20. 20.⚖️ 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
21. 21.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears
22. 22.True or false: soap solution is a base. (a) True (b) False
23. 23.True or false: orange juice is neutral. (a) True (b) False
24. 24.🫧 Which of these is neutral? (a) sugar water (b) tamarind water (c) curd (d) vinegar
25. 25.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
26. 26.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a magnet (c) turmeric powder (d) soap solution
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
29. 29.True or false: a comb is needed for the turmeric test. (a) True (b) False
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a balloon (d) turmeric powder
31. 31.🫧 Which of these is neutral? (a) vinegar (b) soap solution (c) orange juice (d) plain water
32. 32.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) turmeric powder (d) a magnet
34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) lemon juice (d) yeast
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
37. 37.True or false: a balloon is needed for the turmeric test. (a) True (b) False
38. 38.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a mirror (d) turmeric powder
39. 39.⚖️ 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
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it

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