Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 553 · 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.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) water (c) turmeric powder (d) lemon juice
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
3. 3.True or false: vinegar is an acid. (a) False (b) True
4. 4.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🫧 Which of these is an acid? (a) salt water (b) tamarind water (c) baking soda water (d) detergent water
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) soap solution (d) a balloon
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) turmeric powder (d) a balloon
11. 11.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
12. 12.🫧 Which of these is an acid? (a) plain water (b) vinegar (c) baking soda water (d) soap solution
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
14. 14.True or false: plain water is an acid. (a) False (b) True
15. 15.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) soap solution (c) lemon juice (d) white paper strips
17. 17.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
18. 18.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) tamarind water (c) baking soda water (d) detergent water
19. 19.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) sugar water (d) lemon juice
20. 20.🫧 Which of these is neutral? (a) sugar water (b) lemon juice (c) detergent water (d) orange juice
21. 21.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
22. 22.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) a dropper or spoon (d) white paper strips
24. 24.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
26. 26.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
27. 27.True or false: water is not needed for the turmeric test. (a) True (b) False
28. 28.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) vinegar (b) plain water (c) lemon juice (d) detergent water
30. 30.True or false: a magnet is needed for the turmeric test. (a) False (b) True
31. 31.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it disappears (d) it turns yellow again
32. 32.⚖️ 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 turmeric paper (c) the number of drops (d) the liquid we test
33. 33.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.True or false: curd is an acid. (a) True (b) False
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
37. 37.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
38. 38.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
39. 39.⚖️ 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
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True

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