Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 609 · 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: lemon juice is needed for the turmeric test. (a) True (b) False
2. 2.🫧 Which of these is an acid? (a) salt water (b) plain water (c) vinegar (d) baking soda water
3. 3.⚖️ 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 colour we see (c) the liquid we test (d) the turmeric paper
4. 4.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
5. 5.True or false: a mirror is needed for the turmeric test. (a) False (b) True
6. 6.🫧 Which of these is neutral? (a) curd (b) baking soda water (c) tamarind water (d) plain water
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a magnet (d) white paper strips
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
11. 11.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) soap solution (d) white paper strips
13. 13.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
15. 15.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
16. 16.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
17. 17.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) soap solution (d) a magnet
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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) lemon juice (d) a comb
21. 21.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a battery cell (d) a dropper or spoon
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the number of drops (d) the turmeric paper
23. 23.⚖️ 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
24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
25. 25.True or false: yeast is needed for the turmeric test. (a) True (b) False
26. 26.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
28. 28.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
30. 30.True or false: lemon juice is neutral. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
32. 32.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
33. 33.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
36. 36.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
38. 38.True or false: soap solution is needed for the turmeric test. (a) True (b) False
39. 39.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
40. 40.True or false: soap solution is not needed for the turmeric test. (a) True (b) False

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