Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 966 · 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.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) your school uniform (d) a white party dress
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) water (c) a comb (d) a mirror
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🫧 Which of these is a base? (a) orange juice (b) sugar water (c) plain water (d) detergent water
6. 6.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the turmeric paper
8. 8.🫧 Which of these is an acid? (a) lemon juice (b) sugar water (c) plain water (d) soap solution
9. 9.🫧 Which of these is an acid? (a) sugar water (b) soap solution (c) curd (d) baking soda water
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) lemon juice (d) water
11. 11.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
12. 12.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a comb (d) lemon juice
14. 14.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the light we look in (d) the colour we see
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
17. 17.🍋 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
18. 18.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
19. 19.True or false: sugar water is neutral. (a) False (b) True
20. 20.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
21. 21.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) a comb (d) a dropper or spoon
22. 22.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) yeast (d) white paper strips
24. 24.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) white paper strips (d) water
26. 26.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
27. 27.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) a balloon (d) lemon juice
28. 28.True or false: plain water keeps turmeric yellow. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: lemon juice is a base. (a) False (b) True
31. 31.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) soap solution (d) vinegar
34. 34.⚖️ 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 measure it (c) we change it
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
37. 37.True or false: detergent water is a base. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) sugar water (d) lemon juice
39. 39.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) lemon juice (d) a balloon

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