Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 218 · 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.🫧 Which of these is an acid? (a) soap solution (b) orange juice (c) detergent water (d) baking soda water
2. 2.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
3. 3.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) soap solution (d) a balloon
4. 4.⚖️ 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
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
6. 6.⚖️ 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
7. 7.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
8. 8.True or false: vinegar keeps turmeric yellow. (a) False (b) True
9. 9.⚖️ 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
10. 10.🔮 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
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the colour we see
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) your best clothes (d) a white party dress
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
14. 14.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) lemon juice (c) a dropper or spoon (d) turmeric powder
16. 16.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
17. 17.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a comb (d) white paper strips
19. 19.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
20. 20.⚖️ 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
21. 21.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
22. 22.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a balloon (d) white paper strips
23. 23.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
24. 24.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) tamarind water (d) detergent water
25. 25.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
26. 26.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) curd (d) tamarind water
27. 27.🫧 Which of these is an acid? (a) plain water (b) sugar water (c) detergent water (d) vinegar
28. 28.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
30. 30.⚖️ 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
31. 31.True or false: a magnet is needed for the turmeric test. (a) True (b) False
32. 32.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a magnet (d) a comb
33. 33.True or false: curd is neutral. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
35. 35.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a mirror (d) a dropper or spoon
36. 36.⚖️ 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
37. 37.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) green (d) bright blue
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
40. 40.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed

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