Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 530 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a magnet (d) turmeric powder
2. 2.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
3. 3.🛟 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
4. 4.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a magnet (d) white paper strips
5. 5.🟡 Turmeric paper meets baking soda 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 kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) plain water (d) sugar water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
10. 10.True or false: curd is a base. (a) False (b) True
11. 11.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a dropper or spoon (d) a magnet
12. 12.⚖️ 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
13. 13.🫧 Which of these is neutral? (a) plain water (b) baking soda water (c) tamarind water (d) curd
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) lemon juice (c) soap solution (d) water
15. 15.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
16. 16.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) salt water (d) baking soda water
17. 17.⚖️ 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 measure it (c) we keep it the same
18. 18.⚖️ 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
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) soap solution (d) water
21. 21.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) a comb (d) lemon juice
22. 22.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) lemon juice (d) sugar water
23. 23.🟡 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
24. 24.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
25. 25.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
26. 26.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
27. 27.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
28. 28.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.True or false: plain water is a base. (a) False (b) True
30. 30.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) water (d) turmeric powder
31. 31.True or false: a mirror is needed for the turmeric test. (a) True (b) False
32. 32.True or false: water is needed for the turmeric test. (a) True (b) False
33. 33.True or false: curd is an acid. (a) False (b) True
34. 34.True or false: soap solution is needed for the turmeric test. (a) False (b) True
35. 35.🍋 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
36. 36.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
37. 37.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
38. 38.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) a comb (d) soap solution
39. 39.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue

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