Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 357 · 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 needed for the turmeric test? (a) a magnet (b) a mirror (c) water (d) a balloon
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) tamarind water (c) vinegar (d) detergent water
4. 4.True or false: water is needed for the turmeric test. (a) False (b) True
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) turmeric powder (d) a battery cell
6. 6.🫧 Which of these is neutral? (a) tamarind water (b) vinegar (c) sugar water (d) detergent water
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the colour we see
8. 8.True or false: baking soda water is neutral. (a) True (b) False
9. 9.⚖️ 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
10. 10.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) soap solution (d) baking soda water
13. 13.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is hot (d) soap is an acid
14. 14.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
15. 15.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) sugar water (d) soap solution
17. 17.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
18. 18.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
19. 19.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
21. 21.⚖️ 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
22. 22.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
23. 23.🟡 Which of these keeps turmeric yellow? (a) plain water (b) baking soda water (c) soap solution (d) detergent water
24. 24.True or false: soap solution keeps turmeric yellow. (a) False (b) True
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) salt water (d) tamarind water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.⚖️ 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
28. 28.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) curd (d) baking soda water
29. 29.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
30. 30.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) a magnet (d) an indicator
31. 31.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) tamarind water (d) sugar water
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) soap solution (d) lemon juice
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) lemon juice (d) a comb
34. 34.True or false: sugar water is an acid. (a) False (b) True
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) tamarind water (d) soap solution
36. 36.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) soap solution (d) salt water
37. 37.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
38. 38.True or false: tamarind water is neutral. (a) True (b) False
39. 39.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
40. 40.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water

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