Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 724 · 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 keeps turmeric yellow? (a) detergent water (b) soap solution (c) plain water (d) baking soda water
2. 2.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
3. 3.⚖️ 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
4. 4.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
5. 5.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) sugar water (d) lemon juice
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) water (d) a comb
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
8. 8.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white
9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is an acid (d) soap is hot
10. 10.True or false: tamarind water is an acid. (a) False (b) True
11. 11.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) vinegar
12. 12.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a mirror (d) white paper strips
13. 13.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a magnet (d) turmeric powder
16. 16.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) lemon juice (d) a mirror
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
20. 20.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) tamarind water (d) plain water
21. 21.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
22. 22.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a mirror (c) a comb (d) a magnet
23. 23.True or false: water is needed for the turmeric test. (a) True (b) False
24. 24.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
26. 26.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
29. 29.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
30. 30.🫧 Which of these is a base? (a) tamarind water (b) plain water (c) detergent water (d) vinegar
31. 31.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) plain water (d) tamarind water
32. 32.🫧 Which of these is a base? (a) baking soda water (b) vinegar (c) lemon juice (d) tamarind water
33. 33.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
36. 36.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
37. 37.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) curd (d) plain water
38. 38.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns green (d) it turns blue
39. 39.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) soap solution (d) a battery cell
40. 40.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False

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