Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 866 · 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.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) tamarind water (d) soap solution
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) turmeric powder (d) a mirror
4. 4.True or false: a balloon is needed for the turmeric test. (a) True (b) False
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
6. 6.True or false: detergent water keeps turmeric yellow. (a) True (b) False
7. 7.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) a battery cell (d) white paper strips
8. 8.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
9. 9.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) soap solution (d) orange juice
10. 10.⚖️ 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
11. 11.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) salt water (d) vinegar
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
13. 13.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
15. 15.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
16. 16.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
17. 17.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) water (d) a magnet
19. 19.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a comb (d) lemon juice
20. 20.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
21. 21.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
24. 24.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
25. 25.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
26. 26.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
27. 27.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
28. 28.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
29. 29.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns yellow again (d) it turns blue
30. 30.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
31. 31.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
32. 32.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) baking soda water (c) vinegar (d) tamarind water
34. 34.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) plain water (d) baking soda water
35. 35.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) tamarind water (d) salt water
36. 36.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) lemon juice
37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
38. 38.🫧 Which of these is an acid? (a) curd (b) baking soda water (c) soap solution (d) salt water
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
40. 40.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed

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