Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 143 · 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? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the turmeric paper (d) the liquid we test
2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
3. 3.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
4. 4.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) lemon juice (c) soap solution (d) turmeric powder
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a magnet (d) a dropper or spoon
7. 7.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.⚖️ 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
10. 10.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns blue (c) it disappears (d) it turns darker red
11. 11.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) bright blue (d) reddish
13. 13.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it stays yellow (d) it turns red
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
17. 17.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
19. 19.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a comb (d) turmeric powder
20. 20.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) a dropper or spoon (d) a balloon
21. 21.🛟 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
22. 22.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
23. 23.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
25. 25.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
26. 26.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
27. 27.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) bright blue (d) reddish-brown
28. 28.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) white paper strips (d) turmeric powder
29. 29.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
30. 30.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
31. 31.🟡 Which of these keeps turmeric yellow? (a) salt water (b) baking soda water (c) soap solution (d) detergent water
32. 32.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
33. 33.True or false: vinegar is a base. (a) False (b) True
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
37. 37.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
38. 38.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) lemon juice (d) water
40. 40.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) lemon juice (d) plain water

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