Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 775 · 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) turmeric powder (b) lemon juice (c) a battery cell (d) water
2. 2.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
3. 3.🫧 Which of these is neutral? (a) vinegar (b) baking soda water (c) plain water (d) soap solution
4. 4.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
5. 5.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
6. 6.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) detergent water (d) plain water
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
8. 8.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
9. 9.True or false: a mirror is needed for the turmeric test. (a) True (b) False
10. 10.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.⚖️ 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 keep it the same (c) we change it
12. 12.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.⚖️ 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 measure it (c) we change it
17. 17.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) white paper strips (d) soap solution
19. 19.⚖️ 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
20. 20.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
21. 21.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
22. 22.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
23. 23.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) salt water (d) vinegar
24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap water is a base (d) soap is an acid
25. 25.True or false: lemon juice is a base. (a) True (b) False
26. 26.🫧 Which of these is an acid? (a) soap solution (b) orange juice (c) baking soda water (d) detergent water
27. 27.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the colour we see
29. 29.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
30. 30.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
31. 31.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) white paper strips (c) a magnet (d) soap solution
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
35. 35.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
36. 36.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
37. 37.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
38. 38.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
39. 39.True or false: water is needed for the turmeric test. (a) True (b) False
40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green

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