Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 996 · 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 needed for the turmeric test? (a) a mirror (b) yeast (c) a balloon (d) turmeric powder
2. 2.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
4. 4.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) lemon juice (d) a mirror
5. 5.⚖️ 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
6. 6.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
7. 7.⚖️ 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
8. 8.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.⚖️ 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
10. 10.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) lemon juice (c) detergent water (d) baking soda water
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a comb (d) lemon juice
12. 12.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
13. 13.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a battery cell (d) water
15. 15.🫧 Which of these is neutral? (a) sugar water (b) baking soda water (c) curd (d) lemon juice
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a dropper or spoon (d) a magnet
18. 18.⚖️ 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
19. 19.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
20. 20.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
23. 23.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
24. 24.True or false: water is not needed for the turmeric test. (a) True (b) False
25. 25.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
26. 26.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) reddish-brown (d) bright blue
27. 27.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
28. 28.⚖️ 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
29. 29.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) water (c) a dropper or spoon (d) soap solution
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
31. 31.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
32. 32.🫧 Which of these is an acid? (a) sugar water (b) soap solution (c) salt water (d) vinegar
33. 33.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
34. 34.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
37. 37.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
38. 38.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) a balloon (d) soap solution
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
40. 40.True or false: plain water is an acid. (a) True (b) False

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