Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 904 · 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.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
3. 3.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) plain water (d) tamarind water
4. 4.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
5. 5.🫧 Which of these is neutral? (a) tamarind water (b) sugar water (c) orange juice (d) vinegar
6. 6.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) soap solution (d) a mirror
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a magnet (d) turmeric powder
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
9. 9.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.True or false: tamarind water is an acid. (a) False (b) True
11. 11.True or false: plain water keeps turmeric yellow. (a) False (b) True
12. 12.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) a dropper or spoon (c) soap solution (d) lemon juice
13. 13.🫧 Which of these is a base? (a) baking soda water (b) orange juice (c) sugar water (d) tamarind water
14. 14.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) baking soda water (d) detergent water
15. 15.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
16. 16.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) sugar water (d) vinegar
18. 18.🫧 Which of these is a base? (a) detergent water (b) sugar water (c) tamarind water (d) orange juice
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the light we look in
20. 20.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
21. 21.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) tamarind water (c) plain water (d) lemon juice
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) white paper strips (d) soap solution
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
27. 27.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
28. 28.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a magnet (d) soap solution
29. 29.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.True or false: soap solution is needed for the turmeric test. (a) False (b) True
33. 33.True or false: water is not needed for the turmeric test. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) salt water (d) tamarind water
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
36. 36.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) orange juice (d) baking soda water
37. 37.True or false: plain water is neutral. (a) True (b) False
38. 38.⚖️ 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 turmeric paper
39. 39.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
40. 40.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral

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