Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 205 · 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.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
2. 2.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🫧 Which of these is a base? (a) salt water (b) detergent water (c) plain water (d) tamarind water
5. 5.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) lemon juice (d) turmeric powder
6. 6.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
9. 9.🫧 Which of these is neutral? (a) tamarind water (b) plain water (c) orange juice (d) soap solution
10. 10.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
12. 12.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
13. 13.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) your school uniform (d) a white party dress
14. 14.🫧 Which of these is neutral? (a) tamarind water (b) orange juice (c) salt water (d) baking soda water
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) salt water (d) baking soda water
16. 16.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
17. 17.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
18. 18.True or false: water is not needed for the turmeric test. (a) True (b) False
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) turmeric powder (d) water
20. 20.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
21. 21.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) salt water (d) baking soda water
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) turmeric powder (d) white paper strips
23. 23.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) detergent water (d) baking soda water
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) turmeric powder (d) a balloon
25. 25.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
26. 26.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) soap solution (d) detergent water
28. 28.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
30. 30.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) a magnet (d) turmeric powder
32. 32.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
33. 33.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
34. 34.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
35. 35.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
36. 36.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) water (c) white paper strips (d) a dropper or spoon
37. 37.True or false: plain water is a base. (a) False (b) True
38. 38.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.True or false: salt water is a base. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the light we look in (d) the liquid we test

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