Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 796 · 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) turmeric powder (b) a comb (c) water (d) lemon juice
2. 2.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) lemon juice (c) a battery cell (d) yeast
3. 3.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
4. 4.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🫧 Which of these is neutral? (a) vinegar (b) detergent water (c) sugar water (d) lemon juice
6. 6.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
7. 7.True or false: vinegar is an acid. (a) False (b) True
8. 8.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) detergent water (d) baking soda water
10. 10.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
11. 11.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
13. 13.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
14. 14.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
15. 15.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) lemon juice (c) water (d) white paper strips
16. 16.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
17. 17.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
20. 20.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) a balloon
22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) reddish (d) green
23. 23.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) lemon juice (d) turmeric powder
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) tamarind water (d) sugar water
26. 26.True or false: tamarind water is an acid. (a) False (b) True
27. 27.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a mirror (d) lemon juice
29. 29.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
30. 30.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
31. 31.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
32. 32.🍋 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
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a magnet (c) lemon juice (d) turmeric powder
36. 36.🫧 Which of these is a base? (a) lemon juice (b) curd (c) baking soda water (d) tamarind water
37. 37.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) sugar water (d) plain water
38. 38.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) salt water (c) baking soda water (d) tamarind water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the number of drops

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