Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 309 · 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 light we look in is the one thing we change. (a) True (b) False
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
3. 3.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
4. 4.True or false: baking soda water is a base. (a) True (b) False
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a dropper or spoon (d) a mirror
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) soap solution (d) salt water
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) soap solution (c) white paper strips (d) a dropper or spoon
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 number of drops (c) the colour we see
9. 9.True or false: soap solution is needed for the turmeric test. (a) False (b) True
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
13. 13.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) soap solution (d) sugar water
14. 14.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
15. 15.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) soap solution (d) turmeric powder
17. 17.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
18. 18.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) sugar water (d) soap solution
22. 22.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
23. 23.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) water (d) a balloon
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a balloon (d) a dropper or spoon
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
28. 28.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a comb (d) yeast
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the turmeric paper
30. 30.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
32. 32.True or false: a balloon is needed for the turmeric test. (a) True (b) False
33. 33.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns yellow again (d) it turns blue
34. 34.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) a mirror (d) soap solution
36. 36.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
37. 37.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
39. 39.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
40. 40.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid

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