Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 140 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) white paper strips (d) turmeric powder
3. 3.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) tamarind water (d) lemon juice
6. 6.True or false: plain water is a base. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
8. 8.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
11. 11.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) lemon juice (c) a dropper or spoon (d) white paper strips
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) yeast (d) water
13. 13.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
15. 15.True or false: a mirror is needed for the turmeric test. (a) True (b) False
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
17. 17.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears
18. 18.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
19. 19.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) soap solution (d) a mirror
20. 20.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) a comb
21. 21.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) vinegar (d) plain water
22. 22.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
23. 23.🫧 Which of these is a base? (a) sugar water (b) tamarind water (c) detergent water (d) vinegar
24. 24.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
25. 25.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
26. 26.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) vinegar (d) salt water
27. 27.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) sugar water (d) detergent water
28. 28.🧺 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
29. 29.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
30. 30.⚖️ 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 colour we see (d) the liquid we test
31. 31.⚖️ 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
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
34. 34.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
35. 35.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) tamarind water (d) soap solution
37. 37.True or false: detergent water is a base. (a) True (b) False
38. 38.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) plain water (d) orange juice
39. 39.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
40. 40.⚖️ 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

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