Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 177 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) turmeric powder (d) a magnet
2. 2.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) turmeric powder (d) lemon juice
5. 5.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
7. 7.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
8. 8.🛟 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
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) soap solution (d) a dropper or spoon
10. 10.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) it stays white (d) green
11. 11.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
13. 13.True or false: detergent water is an acid. (a) True (b) False
14. 14.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
15. 15.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) lemon juice (d) detergent water
16. 16.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) yeast (d) white paper strips
17. 17.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
18. 18.True or false: a balloon is needed for the turmeric test. (a) False (b) True
19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
20. 20.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
21. 21.⚖️ 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
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the number of drops (d) the turmeric paper
23. 23.True or false: curd is a base. (a) True (b) False
24. 24.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the turmeric test? (a) water (b) yeast (c) a battery cell (d) a mirror
26. 26.⚖️ 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
27. 27.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
29. 29.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
30. 30.True or false: a comb is needed for the turmeric test. (a) True (b) False
31. 31.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.🫧 Which of these is a base? (a) plain water (b) tamarind water (c) soap solution (d) salt water
33. 33.⚖️ 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
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the turmeric paper (d) the colour we see
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
36. 36.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
38. 38.True or false: salt water keeps turmeric yellow. (a) True (b) False
39. 39.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False

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