Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 842 · 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) sugar water (b) tamarind water (c) baking soda water (d) curd
2. 2.True or false: orange juice is an acid. (a) False (b) True
3. 3.True or false: yeast is needed for the turmeric test. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) white paper strips (d) turmeric powder
7. 7.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) yeast (c) a balloon (d) a magnet
8. 8.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) vinegar (d) plain water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
10. 10.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) lemon juice (c) water (d) white paper strips
12. 12.True or false: tamarind water is an acid. (a) True (b) False
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the colour we see
15. 15.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
16. 16.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
17. 17.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
19. 19.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
20. 20.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
21. 21.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
24. 24.True or false: plain water is a base. (a) True (b) False
25. 25.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
26. 26.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
27. 27.True or false: curd is an acid. (a) True (b) False
28. 28.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
29. 29.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the liquid we test
31. 31.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) plain water (c) detergent water (d) soap solution
32. 32.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
34. 34.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) tamarind water (d) baking soda water
36. 36.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a magnet (d) soap solution
39. 39.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) lemon juice (d) soap solution
40. 40.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) turmeric powder (d) a magnet

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