Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 917 · 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.True or false: salt water keeps turmeric yellow. (a) False (b) True
2. 2.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) detergent water (d) vinegar
3. 3.🫧 Which of these is neutral? (a) curd (b) detergent water (c) sugar water (d) orange juice
4. 4.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
5. 5.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) lemon juice (d) a balloon
6. 6.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
7. 7.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
8. 8.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) tamarind water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
11. 11.⚖️ 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
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the light we look in (d) the liquid we test
13. 13.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
14. 14.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
15. 15.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
16. 16.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
17. 17.True or false: plain water keeps turmeric yellow. (a) True (b) False
18. 18.🫧 Which of these is an acid? (a) salt water (b) plain water (c) detergent water (d) tamarind water
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) soap solution (d) a dropper or spoon
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) baking soda water (d) plain water
21. 21.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
22. 22.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
23. 23.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
24. 24.🧺 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 comb
25. 25.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a magnet (d) water
28. 28.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
30. 30.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
31. 31.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is an acid (c) soap is hot (d) soap is magnetic
33. 33.True or false: detergent water keeps turmeric yellow. (a) True (b) False
34. 34.True or false: baking soda water is a base. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
37. 37.True or false: a balloon is needed for the turmeric test. (a) False (b) True
38. 38.⚖️ 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
39. 39.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
40. 40.⚖️ 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 colour we see (c) the number of drops (d) the liquid we test

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids