Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 481 · 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: orange juice is an acid. (a) False (b) True
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) white paper strips (d) a balloon
4. 4.True or false: soap solution is neutral. (a) True (b) False
5. 5.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) sugar water (d) baking soda water
7. 7.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.True or false: a comb is needed for the turmeric test. (a) True (b) False
9. 9.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
10. 10.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
11. 11.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) water (c) a mirror (d) a battery cell
12. 12.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) a dropper or spoon (c) lemon juice (d) water
13. 13.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
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) False (b) True
15. 15.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
16. 16.🫧 Which of these is neutral? (a) tamarind water (b) curd (c) plain water (d) lemon juice
17. 17.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
18. 18.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
19. 19.🫧 Which of these is a base? (a) lemon juice (b) vinegar (c) soap solution (d) orange juice
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.⚖️ 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
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
23. 23.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
24. 24.True or false: plain water is neutral. (a) False (b) True
25. 25.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) white paper strips (d) a battery cell
27. 27.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) bright blue (d) reddish-brown
29. 29.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
30. 30.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
31. 31.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
32. 32.🫧 Which of these is a base? (a) vinegar (b) plain water (c) lemon juice (d) baking soda water
33. 33.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
34. 34.🫧 Which of these is a base? (a) vinegar (b) curd (c) detergent water (d) orange juice
35. 35.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) sugar water
36. 36.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.🫧 Which of these is neutral? (a) orange juice (b) salt water (c) soap solution (d) baking soda water
39. 39.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
40. 40.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice

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