Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 242 · 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.🟡 Which of these keeps turmeric yellow? (a) salt water (b) baking soda water (c) soap solution (d) detergent water
2. 2.🛟 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
3. 3.⚖️ 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
4. 4.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
6. 6.⚖️ 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
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) lemon juice (c) white paper strips (d) water
9. 9.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
11. 11.True or false: sugar water is neutral. (a) True (b) False
12. 12.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
13. 13.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
14. 14.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) vinegar (c) sugar water (d) salt water
16. 16.⚖️ 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
17. 17.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
18. 18.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
19. 19.True or false: vinegar keeps turmeric yellow. (a) True (b) False
20. 20.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
21. 21.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
22. 22.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
23. 23.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
24. 24.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
27. 27.🫧 Which of these is a base? (a) detergent water (b) lemon juice (c) tamarind water (d) salt water
28. 28.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
29. 29.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the liquid we test (d) the turmeric paper
32. 32.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) lemon juice (c) a magnet (d) a battery cell
33. 33.🧺 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 balloon
34. 34.True or false: sugar water keeps turmeric yellow. (a) False (b) True
35. 35.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
37. 37.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a dropper or spoon (d) a magnet
38. 38.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
39. 39.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
40. 40.True or false: white paper strips is needed for the turmeric test. (a) False (b) True

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