Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 596 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) detergent water (d) soap solution
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a battery cell (d) turmeric powder
5. 5.⚖️ 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 light we look in
6. 6.⚖️ 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 number of drops (d) the liquid we test
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the turmeric paper
8. 8.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
9. 9.🫧 Which of these is neutral? (a) baking soda water (b) orange juice (c) plain water (d) lemon juice
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a mirror (d) water
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
12. 12.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
13. 13.🫧 Which of these is neutral? (a) detergent water (b) soap solution (c) sugar water (d) baking soda water
14. 14.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
15. 15.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
16. 16.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) turmeric powder (d) a magnet
17. 17.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
19. 19.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) sugar water (d) lemon juice
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) turmeric powder (c) a dropper or spoon (d) soap solution
21. 21.🛟 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
22. 22.🍋 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
23. 23.True or false: baking soda water is a base. (a) True (b) False
24. 24.🫧 Which of these is a base? (a) sugar water (b) lemon juice (c) baking soda water (d) orange juice
25. 25.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
26. 26.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) a battery cell (d) white paper strips
27. 27.🫧 Which of these is an acid? (a) orange juice (b) detergent water (c) soap solution (d) baking soda water
28. 28.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) lemon juice (d) vinegar
29. 29.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
30. 30.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
31. 31.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) a dropper or spoon (d) turmeric powder
33. 33.True or false: orange juice is an acid. (a) False (b) True
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) baking soda water (d) plain water
36. 36.True or false: vinegar is neutral. (a) True (b) False
37. 37.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
38. 38.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a mirror (d) lemon juice
39. 39.⚖️ 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
40. 40.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed

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