Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 940 · 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.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
2. 2.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
5. 5.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) detergent water (d) soap solution
6. 6.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
7. 7.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a dropper or spoon (d) a mirror
9. 9.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
10. 10.🫧 Which of these is neutral? (a) vinegar (b) tamarind water (c) salt water (d) baking soda water
11. 11.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
12. 12.True or false: sugar water is a base. (a) True (b) False
13. 13.🛟 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
14. 14.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
15. 15.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) white paper strips (d) water
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) turmeric powder (d) a comb
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the liquid we test
19. 19.🫧 Which of these is an acid? (a) baking soda water (b) lemon juice (c) plain water (d) soap solution
20. 20.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) a dropper or spoon (d) soap solution
23. 23.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) a magnet (d) a comb
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.True or false: a comb is needed for the turmeric test. (a) False (b) True
26. 26.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
27. 27.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
28. 28.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
29. 29.🫧 Which of these is neutral? (a) vinegar (b) tamarind water (c) plain water (d) detergent water
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) a dropper or spoon (d) soap solution
31. 31.🫧 Which of these is an acid? (a) soap solution (b) tamarind water (c) salt water (d) baking soda water
32. 32.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) lemon juice (d) baking soda water
33. 33.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
34. 34.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
35. 35.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
36. 36.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) detergent water (d) vinegar
37. 37.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
39. 39.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
40. 40.⚖️ 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 measure it (c) we keep it the same

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