Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 587 · 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 turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) plain water (d) tamarind water
2. 2.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
4. 4.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) soap solution (c) white paper strips (d) turmeric powder
5. 5.🛟 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
6. 6.⚖️ 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
7. 7.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
10. 10.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
11. 11.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
12. 12.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
14. 14.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
15. 15.True or false: water is not needed for the turmeric test. (a) False (b) True
16. 16.True or false: yeast is not needed for the turmeric test. (a) False (b) True
17. 17.🫧 Which of these is a base? (a) tamarind water (b) plain water (c) vinegar (d) baking soda water
18. 18.🫧 Which of these is neutral? (a) baking soda water (b) vinegar (c) plain water (d) tamarind water
19. 19.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) tamarind water (d) soap solution
21. 21.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
22. 22.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a comb (c) turmeric powder (d) a dropper or spoon
23. 23.⚖️ 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
24. 24.🫧 Which of these is an acid? (a) salt water (b) soap solution (c) orange juice (d) sugar water
25. 25.🫧 Which of these is neutral? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
26. 26.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
27. 27.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) plain water (d) tamarind water
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the colour we see
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) turmeric powder (c) a dropper or spoon (d) white paper strips
31. 31.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) sugar water (d) vinegar
32. 32.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
34. 34.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
35. 35.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
36. 36.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) a magnet (d) a dropper or spoon
37. 37.⚖️ 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
38. 38.🧺 Which of these is not needed for the turmeric test? (a) water (b) a battery cell (c) white paper strips (d) turmeric powder
39. 39.True or false: vinegar keeps turmeric yellow. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False

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