Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 695 · 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 dropper or spoon (c) a magnet (d) soap solution
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.True or false: a comb is not needed for the turmeric test. (a) True (b) False
6. 6.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
7. 7.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
9. 9.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
10. 10.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
11. 11.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a battery cell (c) water (d) soap solution
12. 12.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) yeast (d) turmeric powder
13. 13.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) detergent water (d) plain water
14. 14.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) white paper strips (d) turmeric powder
16. 16.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) turmeric powder (d) lemon juice
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) water (d) a comb
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) vinegar (d) baking soda water
21. 21.True or false: sugar water is a base. (a) True (b) False
22. 22.True or false: soap solution is needed for the turmeric test. (a) False (b) True
23. 23.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) turmeric powder (d) a mirror
24. 24.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
25. 25.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
26. 26.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
27. 27.⚖️ 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
28. 28.⚖️ 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 liquid we test (c) the number of drops (d) the colour we see
29. 29.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) green (d) white at once
31. 31.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
32. 32.⚖️ 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
33. 33.True or false: vinegar is a base. (a) False (b) True
34. 34.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution
35. 35.⚖️ 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
36. 36.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
37. 37.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) sugar water (d) vinegar
38. 38.🍋 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
39. 39.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🫧 Which of these is a base? (a) orange juice (b) lemon juice (c) salt water (d) baking soda water

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