Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 518 · 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 neutral? (a) tamarind water (b) baking soda water (c) orange juice (d) sugar water
2. 2.True or false: baking soda water is neutral. (a) True (b) False
3. 3.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
4. 4.True or false: a comb is not needed for the turmeric test. (a) True (b) False
5. 5.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
6. 6.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
7. 7.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
8. 8.🫧 Which of these is an acid? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
9. 9.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) salt water (d) vinegar
10. 10.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) water (d) a magnet
11. 11.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) lemon juice (d) soap solution
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
13. 13.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) baking soda water (c) salt water (d) tamarind water
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) lemon juice (d) turmeric powder
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
20. 20.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
21. 21.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
23. 23.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
24. 24.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
25. 25.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap water is a base (d) soap is an acid
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) water (d) a magnet
27. 27.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
28. 28.🫧 Which of these is neutral? (a) orange juice (b) curd (c) salt water (d) lemon juice
29. 29.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
30. 30.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
31. 31.True or false: detergent water keeps turmeric yellow. (a) False (b) True
32. 32.⚖️ 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 keep it the same (c) we change it
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a battery cell (d) lemon juice
34. 34.⚖️ 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
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) vinegar (d) lemon juice
37. 37.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a mirror (d) white paper strips
38. 38.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
39. 39.🫧 Which of these is a base? (a) soap solution (b) curd (c) tamarind water (d) orange juice
40. 40.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) plain water

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