Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 185 · 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.True or false: a balloon is needed for the turmeric test. (a) True (b) False
2. 2.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) sugar water (d) vinegar
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a battery cell (d) turmeric powder
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) baking soda water (c) plain water (d) tamarind water
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.True or false: salt water is neutral. (a) False (b) True
8. 8.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) vinegar (d) baking soda water
9. 9.True or false: water is not needed for the turmeric test. (a) True (b) False
10. 10.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) water (d) yeast
11. 11.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a mirror (d) a battery cell
12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the liquid we test (d) the turmeric paper
16. 16.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap water is a base (d) soap is an acid
18. 18.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
20. 20.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
22. 22.True or false: detergent water keeps turmeric yellow. (a) False (b) True
23. 23.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
24. 24.True or false: sugar water keeps turmeric yellow. (a) True (b) False
25. 25.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) a battery cell (d) soap solution
26. 26.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
27. 27.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
28. 28.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the liquid we test
30. 30.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
32. 32.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) a battery cell (d) a balloon
33. 33.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) lemon juice (d) white paper strips
37. 37.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) orange juice (d) salt water
38. 38.True or false: orange juice is a base. (a) True (b) False
39. 39.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
40. 40.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) a balloon (d) water

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