Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 949 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
3. 3.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
4. 4.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) sugar water
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) detergent water (c) lemon juice (d) salt water
6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is an acid (d) soap is hot
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) turmeric powder (d) a magnet
8. 8.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) turmeric powder (d) yeast
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ 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
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
13. 13.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
14. 14.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
17. 17.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
18. 18.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) tamarind water (d) plain water
19. 19.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
20. 20.True or false: soap solution is a base. (a) False (b) True
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
24. 24.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
27. 27.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) salt water (d) detergent water
29. 29.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
30. 30.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a battery cell (c) a comb (d) yeast
31. 31.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
32. 32.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
35. 35.🧺 Which of these is not needed for the turmeric test? (a) water (b) a mirror (c) a dropper or spoon (d) lemon juice
36. 36.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
37. 37.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) detergent water (d) baking soda water
38. 38.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
39. 39.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white
40. 40.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed

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