Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 375 · 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 not needed for the turmeric test? (a) white paper strips (b) a comb (c) turmeric powder (d) water
2. 2.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) detergent water (d) baking soda water
3. 3.🫧 Which of these is neutral? (a) curd (b) lemon juice (c) soap solution (d) salt water
4. 4.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
5. 5.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the liquid we test (d) the light we look in
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.True or false: vinegar is neutral. (a) True (b) False
9. 9.🛟 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
10. 10.🫧 Which of these is a base? (a) plain water (b) vinegar (c) detergent water (d) sugar water
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
13. 13.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) tamarind water (d) soap solution
14. 14.🟡 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
15. 15.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.True or false: salt water keeps turmeric yellow. (a) True (b) False
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) baking soda water (d) vinegar
18. 18.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
19. 19.True or false: tamarind water is a base. (a) True (b) False
20. 20.True or false: orange juice is neutral. (a) False (b) True
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) lemon juice (d) water
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a dropper or spoon (d) a battery cell
23. 23.True or false: vinegar is an acid. (a) False (b) True
24. 24.🫧 Which of these is neutral? (a) detergent water (b) vinegar (c) tamarind water (d) sugar water
25. 25.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) soap solution (d) lemon juice
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
28. 28.🧺 Which of these is not needed for the turmeric test? (a) water (b) lemon juice (c) a dropper or spoon (d) a magnet
29. 29.True or false: tamarind water is neutral. (a) False (b) True
30. 30.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
31. 31.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) white paper strips (d) soap solution
33. 33.⚖️ 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
34. 34.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
35. 35.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) salt water (d) vinegar
36. 36.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) soap solution (d) baking soda water
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) salt water (d) soap solution
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) soap solution (d) a dropper or spoon

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