Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 525 · 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) water (b) yeast (c) turmeric powder (d) soap solution
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
3. 3.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) detergent water (d) salt water
6. 6.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
7. 7.🫧 Which of these is a base? (a) salt water (b) curd (c) lemon juice (d) baking soda water
8. 8.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
9. 9.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) soap solution (c) lemon juice (d) turmeric powder
10. 10.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
13. 13.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
16. 16.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) turmeric powder (d) lemon juice
18. 18.🧺 Which of these is not needed for the turmeric test? (a) water (b) lemon juice (c) a battery cell (d) turmeric powder
19. 19.🫧 Which of these is a base? (a) curd (b) lemon juice (c) sugar water (d) soap solution
20. 20.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
21. 21.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the light we look in
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) lemon juice (d) detergent water
24. 24.True or false: water is not needed for the turmeric test. (a) False (b) True
25. 25.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) lemon juice (d) a balloon
26. 26.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
27. 27.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a magnet (c) a dropper or spoon (d) turmeric powder
30. 30.🫧 Which of these is neutral? (a) lemon juice (b) sugar water (c) baking soda water (d) soap solution
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
32. 32.⚖️ 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 number of drops
33. 33.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) vinegar (d) lemon juice
34. 34.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns blue (c) it disappears (d) it turns darker red
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.True or false: sugar water is neutral. (a) False (b) True
38. 38.True or false: a magnet is needed for the turmeric test. (a) False (b) True
39. 39.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test

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