Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 801 · 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) detergent water (c) tamarind water (d) lemon juice
2. 2.True or false: plain water keeps turmeric yellow. (a) True (b) False
3. 3.🫧 Which of these is neutral? (a) baking soda water (b) soap solution (c) sugar water (d) curd
4. 4.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) detergent water (d) vinegar
5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
6. 6.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) curd (d) plain water
7. 7.True or false: curd is an acid. (a) False (b) True
8. 8.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.True or false: baking soda water is neutral. (a) True (b) False
11. 11.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a battery cell (d) a mirror
12. 12.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
13. 13.⚖️ 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 keep it the same (c) we measure it
14. 14.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.⚖️ 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
18. 18.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
19. 19.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
20. 20.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
21. 21.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) water (d) turmeric powder
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
24. 24.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) white paper strips (d) a dropper or spoon
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) sugar water (d) baking soda water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
27. 27.⚖️ 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
28. 28.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) yeast (c) a magnet (d) a mirror
29. 29.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
30. 30.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
32. 32.⚖️ 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 turmeric paper (d) the liquid we test
33. 33.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
34. 34.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
35. 35.True or false: sugar water keeps turmeric yellow. (a) True (b) False
36. 36.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
37. 37.🛟 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
38. 38.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
39. 39.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a mirror (d) soap solution
40. 40.True or false: tamarind water is an acid. (a) False (b) True

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