Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 836 · 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.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) a dropper or spoon (d) a balloon
3. 3.⚖️ 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
4. 4.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
5. 5.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
6. 6.⚖️ 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 light we look in (d) the turmeric paper
7. 7.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) vinegar (d) soap solution
8. 8.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
9. 9.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a battery cell (d) white paper strips
10. 10.True or false: a magnet is needed for the turmeric test. (a) False (b) True
11. 11.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.⚖️ 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 measure it (c) we change it
13. 13.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) soap solution (c) water (d) lemon juice
14. 14.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
15. 15.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
16. 16.True or false: yeast is not needed for the turmeric test. (a) True (b) False
17. 17.⚖️ 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
18. 18.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) detergent water (d) tamarind water
20. 20.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a magnet (d) a prism
21. 21.True or false: water is not needed for the turmeric test. (a) True (b) False
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the light we look in
23. 23.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) water (d) a comb
25. 25.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
26. 26.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a comb (c) a mirror (d) yeast
27. 27.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) water (c) soap solution (d) white paper strips
28. 28.True or false: curd is an acid. (a) True (b) False
29. 29.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) salt water
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) water (d) lemon juice
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
33. 33.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) soap solution (d) turmeric powder
35. 35.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) tamarind water (d) sugar water
36. 36.🫧 Which of these is an acid? (a) vinegar (b) salt water (c) sugar water (d) plain water
37. 37.🫧 Which of these is a base? (a) plain water (b) orange juice (c) vinegar (d) detergent water
38. 38.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
40. 40.🫧 Which of these is neutral? (a) tamarind water (b) plain water (c) detergent water (d) lemon juice

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