Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 751 · 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 measure it (b) we keep it the same (c) we change it
2. 2.True or false: vinegar is an acid. (a) True (b) False
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the light we look in
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) lemon juice (d) yeast
5. 5.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) tamarind water (d) sugar water
6. 6.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
7. 7.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) tamarind water (d) soap solution
8. 8.True or false: salt water is neutral. (a) False (b) True
9. 9.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
11. 11.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a magnet (d) lemon juice
13. 13.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
15. 15.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
16. 16.True or false: sugar water is neutral. (a) False (b) True
17. 17.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
19. 19.True or false: plain water keeps turmeric yellow. (a) False (b) True
20. 20.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
21. 21.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) yeast (d) soap solution
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) turmeric powder (d) lemon juice
23. 23.🛟 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
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the liquid we test
25. 25.⚖️ 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
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) sugar water (c) lemon juice (d) plain water
27. 27.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
28. 28.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) sugar water (d) lemon juice
29. 29.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
31. 31.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
32. 32.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
33. 33.⚖️ 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 change it (c) we measure it
34. 34.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.⚖️ 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
36. 36.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a battery cell (c) a dropper or spoon (d) soap solution
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) white paper strips (c) a dropper or spoon (d) soap solution
39. 39.🫧 Which of these is neutral? (a) curd (b) soap solution (c) plain water (d) orange juice
40. 40.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed

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