Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 235 · 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.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
2. 2.🫧 Which of these is neutral? (a) orange juice (b) plain water (c) lemon juice (d) tamarind water
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) soap solution (d) sugar water
4. 4.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) plain water (d) detergent water
5. 5.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
6. 6.🛟 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
7. 7.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) tamarind water
8. 8.⚖️ 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 change it (c) we measure it
9. 9.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.⚖️ 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
11. 11.⚖️ 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 measure it (c) we change it
12. 12.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
13. 13.🫧 Which of these is neutral? (a) salt water (b) baking soda water (c) vinegar (d) tamarind water
14. 14.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) yeast (d) turmeric powder
15. 15.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) white paper strips (d) a comb
16. 16.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) lemon juice (c) white paper strips (d) a dropper or spoon
17. 17.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) salt water (d) detergent water
19. 19.True or false: plain water is neutral. (a) False (b) True
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) lemon juice (d) a balloon
21. 21.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
23. 23.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
24. 24.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) a mirror (d) a dropper or spoon
26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
27. 27.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns darker red (d) it turns blue
28. 28.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) sugar water (d) tamarind water
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
30. 30.True or false: water is not needed for the turmeric test. (a) True (b) False
31. 31.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) yeast (d) white paper strips
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) water (d) a battery cell
33. 33.True or false: vinegar keeps turmeric yellow. (a) False (b) True
34. 34.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) baking soda water (d) sugar water
35. 35.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
36. 36.🫧 Which of these is neutral? (a) curd (b) vinegar (c) orange juice (d) sugar water
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the liquid we test
38. 38.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
39. 39.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
40. 40.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items

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