Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 561 · 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? True or false: the turmeric paper is kept the same. (a) False (b) True
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) soap solution (d) a battery cell
3. 3.🍋 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
4. 4.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a dropper or spoon (d) a mirror
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) soap solution (d) lemon juice
7. 7.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
10. 10.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) soap solution (d) yeast
12. 12.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) a magnet (d) turmeric powder
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) water (d) a balloon
14. 14.🫧 Which of these is a base? (a) curd (b) detergent water (c) tamarind water (d) vinegar
15. 15.True or false: vinegar is neutral. (a) True (b) False
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
17. 17.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a magnet (d) a comb
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
20. 20.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) vinegar (d) sugar water
21. 21.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
23. 23.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
24. 24.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
25. 25.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
26. 26.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
27. 27.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a comb (d) soap solution
31. 31.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
32. 32.⚖️ 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
33. 33.🫧 Which of these is an acid? (a) tamarind water (b) detergent water (c) salt water (d) baking soda water
34. 34.True or false: a comb is not needed for the turmeric test. (a) True (b) False
35. 35.📘 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
36. 36.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) a battery cell (d) soap solution
38. 38.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) yeast (c) white paper strips (d) turmeric powder
39. 39.🛟 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
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False

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