Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 247 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) white paper strips (d) a battery cell
2. 2.🫧 Which of these is an acid? (a) orange juice (b) baking soda water (c) soap solution (d) detergent water
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
6. 6.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
7. 7.True or false: vinegar is a base. (a) False (b) True
8. 8.🫧 Which of these is a base? (a) lemon juice (b) baking soda water (c) vinegar (d) curd
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
10. 10.True or false: sugar water keeps turmeric yellow. (a) False (b) True
11. 11.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
12. 12.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
16. 16.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
17. 17.True or false: vinegar is an acid. (a) False (b) True
18. 18.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
19. 19.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) lemon juice (d) baking soda water
21. 21.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) turmeric powder (d) a battery cell
22. 22.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🫧 Which of these is neutral? (a) baking soda water (b) lemon juice (c) curd (d) plain water
24. 24.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) sugar water (c) soap solution (d) vinegar
25. 25.True or false: vinegar keeps turmeric yellow. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) lemon juice (d) soap solution
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
28. 28.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
29. 29.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) a mirror (d) water
31. 31.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
32. 32.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) water (d) a comb
33. 33.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) soap solution (c) water (d) turmeric powder
36. 36.True or false: lemon juice is an acid. (a) False (b) True
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.True or false: a comb is needed for the turmeric test. (a) False (b) True
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) soap solution (d) water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the turmeric paper (d) the colour we see

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