Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 983 · 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.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
2. 2.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
3. 3.True or false: vinegar keeps turmeric yellow. (a) True (b) False
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
7. 7.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
8. 8.🫧 Which of these is a base? (a) orange juice (b) salt water (c) detergent water (d) vinegar
9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
10. 10.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
11. 11.True or false: a balloon is needed for the turmeric test. (a) False (b) True
12. 12.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
13. 13.True or false: soap solution is needed for the turmeric test. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) lemon juice (d) tamarind water
15. 15.True or false: curd is a base. (a) True (b) False
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
20. 20.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) green (d) white at once
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
23. 23.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) water (d) a mirror
24. 24.True or false: detergent water keeps turmeric yellow. (a) False (b) True
25. 25.⚖️ 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 number of drops (d) the colour we see
26. 26.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) tamarind water (d) baking soda water
28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) it stays white (d) green
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
30. 30.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
31. 31.True or false: soap solution is a base. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) vinegar (d) tamarind water
33. 33.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
34. 34.⚖️ 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 measure it (c) we change it
35. 35.🫧 Which of these is neutral? (a) orange juice (b) sugar water (c) lemon juice (d) vinegar
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) sugar water (c) salt water (d) plain water
37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
38. 38.True or false: tamarind water is neutral. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) detergent water (c) tamarind water (d) sugar water

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