Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 968 · 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) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
3. 3.🫧 Which of these is neutral? (a) baking soda water (b) plain water (c) detergent water (d) orange juice
4. 4.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) baking soda water (d) salt water
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
6. 6.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) soap solution (c) detergent water (d) baking soda water
7. 7.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
8. 8.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
9. 9.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) white paper strips (d) a battery cell
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) sugar water (d) soap solution
12. 12.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) sugar water (d) tamarind water
13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
14. 14.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
15. 15.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a magnet (d) a balloon
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) turmeric powder (d) soap solution
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the liquid we test (d) the turmeric paper
18. 18.⚖️ 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
19. 19.🫧 Which of these is an acid? (a) tamarind water (b) plain water (c) baking soda water (d) sugar water
20. 20.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) tamarind water
21. 21.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
22. 22.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
23. 23.🫧 Which of these is an acid? (a) curd (b) plain water (c) sugar water (d) soap solution
24. 24.True or false: lemon juice is an acid. (a) False (b) True
25. 25.⚖️ 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
26. 26.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
28. 28.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
29. 29.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
30. 30.🫧 Which of these is a base? (a) curd (b) detergent water (c) tamarind water (d) salt water
31. 31.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
33. 33.True or false: plain water is an acid. (a) True (b) False
34. 34.True or false: orange juice is an acid. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) lemon juice (d) plain water
36. 36.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it stays yellow (d) it turns green
37. 37.🔍 Which is the odd one out? (a) salt water (b) tamarind water (c) baking soda water (d) sugar water
38. 38.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
39. 39.⚖️ 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
40. 40.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base

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