Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 335 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) water (d) soap solution
2. 2.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) bright blue (d) it stays white
3. 3.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) soap solution (d) baking soda water
4. 4.⚖️ 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
5. 5.🍋 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
6. 6.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a mirror (c) a magnet (d) yeast
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) lemon juice (d) a comb
8. 8.⚖️ 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 turmeric paper (d) the liquid we test
9. 9.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) vinegar (d) soap solution
11. 11.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
12. 12.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
13. 13.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
14. 14.True or false: a comb is needed for the turmeric test. (a) True (b) False
15. 15.🫧 Which of these is neutral? (a) vinegar (b) tamarind water (c) curd (d) salt water
16. 16.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
18. 18.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a magnet (d) water
21. 21.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) turmeric powder (d) a mirror
22. 22.🫧 Which of these is neutral? (a) tamarind water (b) orange juice (c) sugar water (d) detergent water
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🫧 Which of these is neutral? (a) curd (b) baking soda water (c) plain water (d) soap solution
25. 25.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
26. 26.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.True or false: orange juice is neutral. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
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) True (b) False
30. 30.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
32. 32.True or false: detergent water is an acid. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) tamarind water
34. 34.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
36. 36.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
37. 37.🫧 Which of these is a base? (a) sugar water (b) curd (c) soap solution (d) orange juice
38. 38.True or false: water is not needed for the turmeric test. (a) True (b) False
39. 39.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
40. 40.True or false: vinegar keeps turmeric yellow. (a) False (b) True

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