Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 638 · 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 measure it (b) we keep it the same (c) we change it
2. 2.True or false: orange juice is a base. (a) True (b) False
3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
5. 5.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) plain water (d) sugar water
6. 6.⚖️ 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
7. 7.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) baking soda water (d) vinegar
9. 9.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
10. 10.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a battery cell (d) lemon juice
12. 12.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
13. 13.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) yeast (c) turmeric powder (d) soap solution
14. 14.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) a comb (d) a magnet
15. 15.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
18. 18.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) soap solution (c) tamarind water (d) salt water
20. 20.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) detergent water (d) orange juice
21. 21.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
22. 22.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
24. 24.🫧 Which of these is neutral? (a) salt water (b) detergent water (c) baking soda water (d) vinegar
25. 25.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) plain water (d) lemon juice
26. 26.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
27. 27.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) a magnet (d) water
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the number of drops (d) the liquid we test
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
30. 30.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
31. 31.🍋 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
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) white paper strips (d) turmeric powder
33. 33.True or false: yeast is not needed for the turmeric test. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
35. 35.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
36. 36.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
37. 37.⚖️ 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
38. 38.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a comb (c) lemon juice (d) a dropper or spoon
40. 40.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True

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