Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 503 · 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 not needed for the turmeric test? (a) white paper strips (b) a mirror (c) turmeric powder (d) water
2. 2.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
3. 3.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
4. 4.🔍 Which is the odd one out? (a) salt water (b) tamarind water (c) detergent water (d) sugar water
5. 5.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
6. 6.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
7. 7.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the turmeric paper (d) the number of drops
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🔮 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
11. 11.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
13. 13.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
14. 14.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
15. 15.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
16. 16.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
17. 17.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) tamarind water
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) yeast (c) a dropper or spoon (d) lemon juice
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) white paper strips (d) a mirror
20. 20.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a battery cell (d) lemon juice
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
23. 23.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
25. 25.⚖️ 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 turmeric paper (c) the number of drops (d) the liquid we test
26. 26.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) lemon juice (d) a mirror
27. 27.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
28. 28.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
29. 29.🫧 Which of these is neutral? (a) detergent water (b) lemon juice (c) tamarind water (d) plain water
30. 30.⚖️ 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
31. 31.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
32. 32.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) baking soda water (d) lemon juice
33. 33.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
34. 34.🫧 Which of these is a base? (a) lemon juice (b) baking soda water (c) sugar water (d) salt water
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
36. 36.🫧 Which of these is a base? (a) soap solution (b) tamarind water (c) sugar water (d) vinegar
37. 37.True or false: sugar water is a base. (a) False (b) True
38. 38.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
39. 39.True or false: salt water keeps turmeric yellow. (a) True (b) False
40. 40.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) baking soda water (d) tamarind water

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