Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 834 · 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 needed for the turmeric test? (a) soap solution (b) yeast (c) a magnet (d) a balloon
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
3. 3.True or false: soap solution is a base. (a) True (b) False
4. 4.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) lemon juice (c) yeast (d) a magnet
5. 5.🧺 Which of these is needed for the turmeric test? (a) water (b) a balloon (c) yeast (d) a comb
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
7. 7.True or false: water is needed for the turmeric test. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) vinegar (d) sugar water
9. 9.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
10. 10.🫧 Which of these is a base? (a) soap solution (b) plain water (c) tamarind water (d) sugar water
11. 11.True or false: yeast is not needed for the turmeric test. (a) False (b) True
12. 12.🟡 Which of these keeps turmeric yellow? (a) salt water (b) detergent water (c) soap solution (d) baking soda water
13. 13.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
14. 14.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) baking soda water (d) salt water
16. 16.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
17. 17.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
18. 18.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) water (d) a battery cell
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a magnet (d) lemon juice
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the turmeric paper
23. 23.⚖️ 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 number of drops
24. 24.⚖️ 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
25. 25.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
27. 27.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
28. 28.True or false: curd is an acid. (a) False (b) True
29. 29.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
30. 30.True or false: baking soda water is a base. (a) True (b) False
31. 31.⚖️ 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 light we look in
32. 32.⚖️ 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
33. 33.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) white paper strips (d) a comb
35. 35.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
36. 36.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) a dropper or spoon (d) water
37. 37.🛟 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
38. 38.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) lemon juice (d) a magnet

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