Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 934 · 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.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
4. 4.True or false: vinegar keeps turmeric yellow. (a) False (b) True
5. 5.⚖️ 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 number of drops
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) detergent water (d) tamarind water
9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
10. 10.True or false: baking soda water is an acid. (a) False (b) True
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a mirror (d) water
12. 12.⚖️ 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
13. 13.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
14. 14.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) turmeric powder (c) a magnet (d) a balloon
15. 15.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
16. 16.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
17. 17.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) a battery cell (d) turmeric powder
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the turmeric paper
20. 20.⚖️ 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
21. 21.True or false: orange juice is an acid. (a) True (b) False
22. 22.True or false: vinegar is neutral. (a) False (b) True
23. 23.⚖️ 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 turmeric paper (c) the liquid we test (d) the number of drops
24. 24.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
26. 26.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
27. 27.True or false: detergent water is neutral. (a) False (b) True
28. 28.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
29. 29.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) a comb (d) white paper strips
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
31. 31.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
32. 32.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
33. 33.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
34. 34.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a battery cell (d) a dropper or spoon
35. 35.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.True or false: soap solution is needed for the turmeric test. (a) True (b) False
37. 37.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a magnet (c) turmeric powder (d) water
39. 39.🔍 Which is the odd one out? (a) vinegar (b) plain water (c) tamarind water (d) soap solution
40. 40.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution

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