Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 457 · 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 of these is an acid? (a) salt water (b) soap solution (c) orange juice (d) plain water
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🔮 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
4. 4.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🫧 Which of these is a base? (a) orange juice (b) baking soda water (c) curd (d) plain water
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
7. 7.⚖️ 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 change it (c) we measure it
8. 8.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
9. 9.True or false: detergent water is neutral. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.⚖️ 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 number of drops (c) the turmeric paper (d) the colour we see
14. 14.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
15. 15.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) vinegar (d) tamarind water
17. 17.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) soap solution (d) a magnet
18. 18.⚖️ 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
19. 19.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
20. 20.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a dropper or spoon (d) a balloon
21. 21.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) detergent water (d) plain water
23. 23.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
24. 24.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
25. 25.🍋 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
26. 26.🫧 Which of these is neutral? (a) plain water (b) detergent water (c) tamarind water (d) soap solution
27. 27.True or false: a magnet is needed for the turmeric test. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) sugar water (d) baking soda water
29. 29.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
30. 30.True or false: plain water is a base. (a) False (b) True
31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) turmeric powder (c) a battery cell (d) yeast
32. 32.⚖️ 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 liquid we test (d) the light we look in
33. 33.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a comb (c) turmeric powder (d) water
34. 34.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
35. 35.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a comb (c) a mirror (d) a magnet
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) lemon juice (d) a comb
37. 37.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) yeast (d) white paper strips
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) water (d) soap solution
40. 40.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral

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