Turmeric Indicator Experiment Worksheet

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