Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 926 · 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 is the odd one out? (a) salt water (b) tamarind water (c) sugar water (d) soap solution
2. 2.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) soap solution
3. 3.🫧 Which of these is neutral? (a) vinegar (b) salt water (c) lemon juice (d) orange juice
4. 4.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
6. 6.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) tamarind water (d) soap solution
7. 7.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) yeast (d) turmeric powder
8. 8.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
9. 9.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
10. 10.True or false: lemon juice is a base. (a) False (b) True
11. 11.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) yeast (d) white paper strips
12. 12.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
13. 13.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the colour we see
15. 15.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) lemon juice (c) detergent water (d) baking soda water
16. 16.True or false: a mirror is needed for the turmeric test. (a) False (b) True
17. 17.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) lemon juice (d) yeast
21. 21.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
22. 22.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) reddish (d) green
24. 24.True or false: tamarind water is neutral. (a) True (b) False
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.⚖️ 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
28. 28.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
29. 29.🫧 Which of these is a base? (a) vinegar (b) lemon juice (c) detergent water (d) curd
30. 30.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) lemon juice (d) sugar water
31. 31.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the light we look in (d) the liquid we test
34. 34.True or false: vinegar is an acid. (a) True (b) False
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) sugar water (c) plain water (d) lemon juice
36. 36.⚖️ 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
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) water (d) a magnet
39. 39.True or false: detergent water is a base. (a) True (b) False
40. 40.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow

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