Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 425 · 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 a base? (a) baking soda water (b) tamarind water (c) curd (d) lemon juice
2. 2.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) tamarind water (d) baking soda water
4. 4.⚖️ 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
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns green (d) it turns blue
6. 6.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a dropper or spoon (d) a comb
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
9. 9.True or false: soap solution keeps turmeric yellow. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
11. 11.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.True or false: water is not needed for the turmeric test. (a) False (b) True
13. 13.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
14. 14.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
15. 15.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) tamarind water (d) salt water
16. 16.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
17. 17.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
18. 18.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
19. 19.⚖️ 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
20. 20.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) sugar water (d) detergent water
22. 22.🫧 Which of these is an acid? (a) detergent water (b) tamarind water (c) salt water (d) soap solution
23. 23.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) water (c) yeast (d) a balloon
24. 24.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) a dropper or spoon (d) water
28. 28.🫧 Which of these is neutral? (a) tamarind water (b) vinegar (c) sugar water (d) orange juice
29. 29.🧺 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) soap solution
30. 30.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
31. 31.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
32. 32.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
33. 33.True or false: sugar water is an acid. (a) False (b) True
34. 34.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
35. 35.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
37. 37.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
38. 38.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
39. 39.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
40. 40.True or false: a magnet is not needed for the turmeric test. (a) False (b) True

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