Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 196 · 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.True or false: sugar water is neutral. (a) False (b) True
2. 2.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
3. 3.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
4. 4.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a dropper or spoon (d) yeast
5. 5.⚖️ 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 light we look in (c) the liquid we test (d) the number of drops
6. 6.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
7. 7.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) lemon juice (d) vinegar
8. 8.True or false: a magnet is needed for the turmeric test. (a) True (b) False
9. 9.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) sugar water (d) lemon juice
10. 10.True or false: tamarind water is an acid. (a) True (b) False
11. 11.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a magnet (d) turmeric powder
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) soap solution (d) white paper strips
13. 13.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) a mirror
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) detergent water (d) lemon juice
16. 16.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.⚖️ 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
19. 19.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
20. 20.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
21. 21.True or false: tamarind water is neutral. (a) True (b) False
22. 22.🟡 Which of these keeps turmeric yellow? (a) sugar water (b) soap solution (c) detergent water (d) baking soda water
23. 23.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) lemon juice (c) a comb (d) yeast
24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) soap solution (d) a magnet
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
29. 29.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) tamarind water (d) baking soda water
31. 31.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
32. 32.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
33. 33.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
34. 34.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
35. 35.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) vinegar (d) soap solution
36. 36.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) vinegar
37. 37.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) your school uniform (d) a white party dress
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) white paper strips (d) lemon juice
39. 39.🫧 Which of these is neutral? (a) orange juice (b) baking soda water (c) detergent water (d) plain water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the turmeric paper (d) the colour we see

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