Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 50 · 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 turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
3. 3.⚖️ 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 measure it (c) we change it
4. 4.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a mirror (c) white paper strips (d) water
6. 6.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.⚖️ 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
8. 8.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) green (d) white at once
9. 9.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
10. 10.🫧 Which of these is a base? (a) plain water (b) sugar water (c) tamarind water (d) baking soda water
11. 11.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
12. 12.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) plain water (d) lemon juice
13. 13.🫧 Which of these is a base? (a) lemon juice (b) vinegar (c) salt water (d) soap solution
14. 14.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a comb (d) lemon juice
15. 15.🔍 Which is the odd one out? (a) salt water (b) tamarind water (c) lemon juice (d) baking soda water
16. 16.🫧 Which of these is neutral? (a) detergent water (b) salt water (c) lemon juice (d) vinegar
17. 17.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) water (d) yeast
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) water (d) turmeric powder
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) turmeric powder (d) a dropper or spoon
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
21. 21.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
22. 22.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
23. 23.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
24. 24.True or false: vinegar is an acid. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
27. 27.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a battery cell (d) turmeric powder
28. 28.🔍 Which is the odd one out? (a) plain water (b) sugar water (c) soap solution (d) lemon juice
29. 29.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.True or false: soap solution is needed for the turmeric test. (a) True (b) False
34. 34.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
35. 35.True or false: plain water keeps turmeric yellow. (a) True (b) False
36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) salt water (c) baking soda water (d) soap solution
37. 37.🫧 Which of these is an acid? (a) soap solution (b) plain water (c) tamarind water (d) baking soda water
38. 38.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
40. 40.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False

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