Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 228 · 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.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
2. 2.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
3. 3.⚖️ 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 colour we see (c) the turmeric paper (d) the light we look in
4. 4.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) vinegar (d) lemon juice
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) tamarind water (d) lemon juice
6. 6.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.⚖️ 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
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) vinegar (c) plain water (d) lemon juice
10. 10.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
11. 11.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
12. 12.True or false: soap solution is an acid. (a) True (b) False
13. 13.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in
15. 15.🫧 Which of these is neutral? (a) vinegar (b) sugar water (c) lemon juice (d) detergent water
16. 16.True or false: tamarind water is neutral. (a) True (b) False
17. 17.⚖️ 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
18. 18.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
19. 19.True or false: salt water is an acid. (a) True (b) False
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) yeast (c) a dropper or spoon (d) water
22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
23. 23.True or false: a comb is needed for the turmeric test. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) plain water (d) vinegar
25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
26. 26.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) curd (d) soap solution
27. 27.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
28. 28.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution
29. 29.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
31. 31.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
34. 34.⚖️ 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
35. 35.True or false: detergent water keeps turmeric yellow. (a) False (b) True
36. 36.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
38. 38.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.⚖️ 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
40. 40.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown

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