Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 42 · 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 light we look in”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) soap solution (c) vinegar (d) salt water
3. 3.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) plain water (c) tamarind water (d) sugar water
5. 5.True or false: a mirror is needed for the turmeric test. (a) False (b) True
6. 6.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.True or false: vinegar keeps turmeric yellow. (a) True (b) False
8. 8.⚖️ 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 change it (c) we measure it
9. 9.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
10. 10.True or false: salt water keeps turmeric yellow. (a) True (b) False
11. 11.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) plain water (d) lemon juice
12. 12.🟡 Which of these keeps turmeric yellow? (a) salt water (b) detergent water (c) baking soda water (d) soap solution
13. 13.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
14. 14.🫧 Which of these is a base? (a) sugar water (b) baking soda water (c) vinegar (d) curd
15. 15.True or false: a comb is not needed for the turmeric test. (a) False (b) True
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the turmeric paper (d) the light we look in
17. 17.True or false: soap solution keeps turmeric yellow. (a) False (b) True
18. 18.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
20. 20.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a dropper or spoon (d) a magnet
22. 22.True or false: sugar water is an acid. (a) True (b) False
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
24. 24.True or false: yeast is needed for the turmeric test. (a) True (b) False
25. 25.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) white paper strips (d) soap solution
26. 26.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a battery cell (d) a comb
27. 27.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) white paper strips (d) soap solution
29. 29.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) baking soda water (d) lemon juice
30. 30.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
31. 31.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
32. 32.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
34. 34.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) a balloon (d) a dropper or spoon
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a dropper or spoon (d) a comb
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a balloon (d) turmeric powder
37. 37.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) yeast (d) white paper strips
39. 39.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
40. 40.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a pulley (d) a prism

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