Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 693 · 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 a base? (a) lemon juice (b) baking soda water (c) salt water (d) sugar water
2. 2.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green
3. 3.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
4. 4.🛟 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
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
6. 6.🫧 Which of these is a base? (a) soap solution (b) curd (c) tamarind water (d) vinegar
7. 7.True or false: baking soda water is neutral. (a) False (b) True
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a battery cell (d) a balloon
10. 10.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) yeast (d) turmeric powder
12. 12.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a magnet (d) soap solution
13. 13.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
14. 14.True or false: tamarind water is an acid. (a) False (b) True
15. 15.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
16. 16.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a battery cell (d) lemon juice
17. 17.🔍 Which is the odd one out? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
18. 18.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
19. 19.🫧 Which of these is neutral? (a) sugar water (b) tamarind water (c) curd (d) orange juice
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) vinegar (d) lemon juice
21. 21.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) white paper strips (d) a mirror
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
24. 24.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) orange juice (d) detergent water
25. 25.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) a mirror (d) white paper strips
26. 26.⚖️ 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
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
29. 29.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
32. 32.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
33. 33.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
34. 34.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) a comb
35. 35.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
36. 36.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
37. 37.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
38. 38.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
40. 40.🫧 Which of these is neutral? (a) soap solution (b) curd (c) salt water (d) orange juice

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