Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 569 · 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? True or false: the light we look in is kept the same. (a) True (b) False
2. 2.🫧 Which of these is neutral? (a) curd (b) plain water (c) baking soda water (d) vinegar
3. 3.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) bright blue (d) green
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 measure it (c) we change it
5. 5.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) turmeric powder (d) a magnet
6. 6.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
8. 8.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
9. 9.True or false: a balloon is needed for the turmeric test. (a) True (b) False
10. 10.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
11. 11.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
12. 12.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a battery cell (d) turmeric powder
14. 14.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the turmeric paper (c) the number of drops (d) the liquid we test
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) a dropper or spoon (d) water
18. 18.True or false: yeast is needed for the turmeric test. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) soap solution (d) baking soda water
20. 20.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
21. 21.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
22. 22.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
23. 23.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
25. 25.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) vinegar (d) soap solution
27. 27.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) soap solution (d) turmeric powder
30. 30.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
31. 31.⚖️ 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
32. 32.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
33. 33.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) sugar water (d) soap solution
35. 35.True or false: baking soda water is a base. (a) True (b) False
36. 36.True or false: baking soda water is an acid. (a) False (b) True
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the light we look in
38. 38.🔮 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
39. 39.True or false: yeast is not needed for the turmeric test. (a) False (b) True
40. 40.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base

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