Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 664 · 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 colour we see is kept the same. (a) False (b) True
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
3. 3.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a battery cell (d) turmeric powder
4. 4.🫧 Which of these is an acid? (a) salt water (b) vinegar (c) soap solution (d) baking soda water
5. 5.⚖️ 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
6. 6.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the number of drops (d) the colour we see
8. 8.True or false: a magnet is needed for the turmeric test. (a) True (b) False
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) baking soda water (c) tamarind water (d) lemon juice
10. 10.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
11. 11.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the turmeric paper
13. 13.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) orange juice (d) vinegar
14. 14.🫧 Which of these is neutral? (a) soap solution (b) sugar water (c) orange juice (d) detergent water
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
16. 16.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
17. 17.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
18. 18.True or false: baking soda water is neutral. (a) True (b) False
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) tamarind water (d) detergent water
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a balloon (d) soap solution
21. 21.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
22. 22.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
23. 23.True or false: vinegar is neutral. (a) False (b) True
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🫧 Which of these is a base? (a) vinegar (b) tamarind water (c) baking soda water (d) sugar water
26. 26.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
27. 27.🫧 Which of these is an acid? (a) soap solution (b) tamarind water (c) sugar water (d) detergent water
28. 28.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) soap solution (d) detergent water
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) lemon juice (c) water (d) white paper strips
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
32. 32.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
33. 33.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
36. 36.True or false: tamarind water is a base. (a) False (b) True
37. 37.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
38. 38.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🟡 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
40. 40.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) white paper strips (d) a balloon

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