Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 359 · 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 is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) turmeric powder (d) a comb
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
4. 4.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
5. 5.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) detergent water (d) salt water
7. 7.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.True or false: vinegar keeps turmeric yellow. (a) True (b) False
9. 9.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a magnet (d) white paper strips
10. 10.⚖️ 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 liquid we test (c) the turmeric paper (d) the colour we see
11. 11.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) vinegar (d) baking soda water
12. 12.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
13. 13.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
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 is a base? (a) vinegar (b) orange juice (c) detergent water (d) tamarind water
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) lemon juice (d) soap solution
19. 19.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
20. 20.🫧 Which of these is neutral? (a) baking soda water (b) lemon juice (c) tamarind water (d) salt water
21. 21.True or false: curd is an acid. (a) False (b) True
22. 22.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the turmeric paper (d) the colour we see
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
27. 27.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
28. 28.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
29. 29.🧺 Which of these is needed for the turmeric test? (a) a comb (b) soap solution (c) a battery cell (d) a magnet
30. 30.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.🫧 Which of these is an acid? (a) soap solution (b) plain water (c) detergent water (d) lemon juice
32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap is magnetic (d) soap water is a base
33. 33.⚖️ 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
34. 34.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
35. 35.🍋 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
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) plain water (d) sugar water
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
38. 38.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) soap solution (c) baking soda water (d) detergent water
39. 39.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) orange juice (d) salt water
40. 40.🛟 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

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