Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 339 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a mirror (d) lemon juice
2. 2.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) bright blue (d) reddish-brown
3. 3.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
4. 4.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) sugar water (d) curd
5. 5.🫧 Which of these is neutral? (a) baking soda water (b) plain water (c) tamarind water (d) vinegar
6. 6.⚖️ 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
7. 7.🛟 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
8. 8.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
9. 9.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
10. 10.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
11. 11.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) white paper strips (d) a balloon
13. 13.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the turmeric paper
16. 16.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
17. 17.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
18. 18.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
19. 19.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) salt water
20. 20.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
21. 21.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
22. 22.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
23. 23.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
24. 24.True or false: plain water is neutral. (a) False (b) True
25. 25.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) a battery cell (d) turmeric powder
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) white paper strips (d) water
27. 27.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) soap solution (d) salt water
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) soap solution (d) water
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the liquid we test
30. 30.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) baking soda water (d) salt water
31. 31.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) soap solution (d) yeast
34. 34.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) lemon juice (d) vinegar
35. 35.True or false: water is needed for the turmeric test. (a) True (b) False
36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
37. 37.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) yeast (d) lemon juice
38. 38.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) sugar water
40. 40.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral

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