Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 766 · 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? True or false: the number of drops is kept the same. (a) False (b) True
2. 2.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) lemon juice (d) a mirror
4. 4.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) a battery cell (d) a dropper or spoon
5. 5.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
6. 6.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
7. 7.True or false: soap solution is a base. (a) False (b) True
8. 8.True or false: orange juice is neutral. (a) True (b) False
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a dropper or spoon (d) a magnet
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a dropper or spoon (d) a balloon
11. 11.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
13. 13.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
14. 14.True or false: soap solution keeps turmeric yellow. (a) True (b) False
15. 15.🫧 Which of these is a base? (a) tamarind water (b) salt water (c) lemon juice (d) detergent water
16. 16.True or false: water is needed for the turmeric test. (a) False (b) True
17. 17.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) soap solution (d) white paper strips
18. 18.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) tamarind water (d) detergent water
19. 19.⚖️ 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
20. 20.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) lemon juice (d) tamarind water
23. 23.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
24. 24.🫧 Which of these is an acid? (a) baking soda water (b) orange juice (c) soap solution (d) detergent water
25. 25.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the liquid we test (d) the turmeric paper
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) soap solution (d) white paper strips
29. 29.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) soap solution (d) yeast
32. 32.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
34. 34.🔮 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
35. 35.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
36. 36.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns yellow again (d) it turns blue
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) white paper strips (d) soap solution
38. 38.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
39. 39.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
40. 40.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True

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