Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 805 · 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 turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
3. 3.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
4. 4.True or false: sugar water is a base. (a) False (b) True
5. 5.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
6. 6.True or false: water is not needed for the turmeric test. (a) True (b) False
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) soap solution (c) water (d) a dropper or spoon
8. 8.True or false: soap solution is neutral. (a) True (b) False
9. 9.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
12. 12.⚖️ 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
13. 13.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
14. 14.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
15. 15.True or false: vinegar is a base. (a) True (b) False
16. 16.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
17. 17.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) white paper strips (d) a mirror
18. 18.⚖️ 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
19. 19.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
20. 20.True or false: detergent water is an acid. (a) True (b) False
21. 21.True or false: sugar water keeps turmeric yellow. (a) False (b) True
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) plain water (d) detergent water
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) a balloon
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a mirror (d) soap solution
26. 26.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
27. 27.True or false: curd is a base. (a) False (b) True
28. 28.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) orange juice (d) soap solution
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
31. 31.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
32. 32.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) bright blue (d) white at once
33. 33.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
34. 34.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
35. 35.🫧 Which of these is neutral? (a) orange juice (b) baking soda water (c) tamarind water (d) salt water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a comb (d) turmeric powder
38. 38.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) sugar water (d) soap solution
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the turmeric paper (d) the colour we see
40. 40.⚖️ 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

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