Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 623 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
4. 4.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
8. 8.True or false: orange juice is an acid. (a) False (b) True
9. 9.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) white paper strips (c) a magnet (d) yeast
10. 10.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) soap solution (c) turmeric powder (d) lemon juice
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
14. 14.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
15. 15.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
16. 16.True or false: orange juice is a base. (a) True (b) False
17. 17.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
18. 18.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
20. 20.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the number of drops
22. 22.True or false: vinegar is a base. (a) True (b) False
23. 23.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the turmeric paper
25. 25.True or false: water is needed for the turmeric test. (a) False (b) True
26. 26.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
27. 27.True or false: baking soda water is an acid. (a) False (b) True
28. 28.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
29. 29.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) plain water (d) baking soda water
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
31. 31.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) baking soda water (d) soap solution
32. 32.⚖️ 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
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) white paper strips (d) turmeric powder
36. 36.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
37. 37.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
39. 39.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) soap solution (c) sugar water (d) plain water

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