Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 647 · 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 is needed for the turmeric test? (a) a magnet (b) yeast (c) lemon juice (d) a battery cell
2. 2.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) a dropper or spoon (d) turmeric powder
4. 4.🍋 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
5. 5.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
8. 8.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) soap solution (d) a balloon
10. 10.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
11. 11.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
12. 12.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
14. 14.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a comb (d) a dropper or spoon
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) white paper strips (d) turmeric powder
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) yeast (d) a dropper or spoon
17. 17.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) plain water (d) detergent water
18. 18.⚖️ 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
19. 19.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
20. 20.True or false: lemon juice is an acid. (a) False (b) True
21. 21.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) soap solution (d) vinegar
22. 22.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) a mirror (d) a dropper or spoon
23. 23.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.🫧 Which of these is an acid? (a) curd (b) soap solution (c) sugar water (d) detergent water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🫧 Which of these is a base? (a) tamarind water (b) plain water (c) baking soda water (d) vinegar
28. 28.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) yeast (d) a battery cell
29. 29.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
30. 30.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
32. 32.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.⚖️ 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
36. 36.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
37. 37.True or false: a comb is not needed for the turmeric test. (a) True (b) False
38. 38.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
39. 39.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
40. 40.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow

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