Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 233 · 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? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) sugar water (d) lemon juice
3. 3.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a balloon (d) water
4. 4.⚖️ 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
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
7. 7.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) detergent water (d) baking soda water
11. 11.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) white paper strips (d) turmeric powder
13. 13.True or false: detergent water keeps turmeric yellow. (a) False (b) True
14. 14.True or false: curd is an acid. (a) True (b) False
15. 15.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a prism (d) a pulley
16. 16.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a mirror (c) soap solution (d) a dropper or spoon
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) turmeric powder (d) a comb
18. 18.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
19. 19.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) vinegar (d) sugar water
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) white paper strips (d) a mirror
21. 21.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) plain water (d) vinegar
22. 22.🫧 Which of these is a base? (a) tamarind water (b) baking soda water (c) lemon juice (d) salt water
23. 23.🟡 Which of these keeps turmeric yellow? (a) salt water (b) detergent water (c) soap solution (d) baking soda water
24. 24.True or false: plain water is an acid. (a) False (b) True
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
27. 27.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) a balloon (d) a dropper or spoon
28. 28.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) baking soda water (d) salt water
30. 30.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) a dropper or spoon (d) lemon juice
33. 33.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
34. 34.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) vinegar (d) detergent water
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.⚖️ 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
39. 39.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed

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