Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 395 · 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 turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) salt water (d) detergent water
2. 2.⚖️ 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 colour we see (c) the turmeric paper (d) the light we look in
3. 3.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
4. 4.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) soap solution (d) a battery cell
5. 5.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
6. 6.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) plain water (d) salt water
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a dropper or spoon (d) yeast
8. 8.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) yeast (d) turmeric powder
9. 9.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
11. 11.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the light we look in
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
14. 14.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
15. 15.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a magnet (d) turmeric powder
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a mirror (d) lemon juice
18. 18.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a magnet (c) yeast (d) a mirror
19. 19.🍋 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
20. 20.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
22. 22.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
23. 23.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a dropper or spoon (d) white paper strips
24. 24.True or false: a mirror is needed for the turmeric test. (a) False (b) True
25. 25.🧺 Which of these is needed for the turmeric test? (a) yeast (b) water (c) a battery cell (d) a mirror
26. 26.🫧 Which of these is an acid? (a) sugar water (b) lemon juice (c) detergent water (d) baking soda water
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a balloon (d) lemon juice
28. 28.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) water (c) a dropper or spoon (d) soap solution
29. 29.True or false: a balloon is needed for the turmeric test. (a) True (b) False
30. 30.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) a mirror (d) a magnet
31. 31.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
32. 32.⚖️ 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
33. 33.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
34. 34.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) detergent water (d) vinegar
35. 35.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
37. 37.🫧 Which of these is a base? (a) lemon juice (b) orange juice (c) curd (d) detergent water
38. 38.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) lemon juice (d) tamarind water
39. 39.True or false: detergent water is an acid. (a) True (b) False
40. 40.True or false: a mirror is not needed for the turmeric test. (a) True (b) False

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