Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 44 · 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) water (b) a balloon (c) a mirror (d) a battery cell
2. 2.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) soap solution (d) a magnet
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) a dropper or spoon (d) lemon juice
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
5. 5.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
6. 6.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) a magnet (d) lemon juice
7. 7.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
8. 8.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) tamarind water (d) salt water
10. 10.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) sugar water (c) soap solution (d) detergent water
11. 11.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) vinegar (d) baking soda water
13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
15. 15.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a magnet (d) white paper strips
16. 16.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
18. 18.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a battery cell (d) white paper strips
20. 20.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
21. 21.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
22. 22.True or false: vinegar is an acid. (a) True (b) False
23. 23.True or false: soap solution keeps turmeric yellow. (a) True (b) False
24. 24.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
25. 25.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) turmeric powder (d) yeast
27. 27.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a comb (d) water
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) soap solution (d) lemon juice
29. 29.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is an acid (c) soap is magnetic (d) soap is hot
30. 30.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a comb (c) a magnet (d) a battery cell
31. 31.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) a balloon (d) water
32. 32.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) lemon juice (d) vinegar
33. 33.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
34. 34.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) it stays white (d) green
35. 35.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the light we look in
37. 37.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
38. 38.⚖️ 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
39. 39.True or false: curd is an acid. (a) True (b) False
40. 40.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) white paper strips (d) a mirror

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