Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 812 · 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) a dropper or spoon (b) water (c) white paper strips (d) yeast
2. 2.🫧 Which of these is a base? (a) lemon juice (b) baking soda water (c) tamarind water (d) orange juice
3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
4. 4.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
5. 5.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) soap solution (d) turmeric powder
7. 7.🫧 Which of these is neutral? (a) orange juice (b) salt water (c) detergent water (d) lemon juice
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a battery cell (d) a dropper or spoon
9. 9.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) white paper strips (d) a mirror
10. 10.🫧 Which of these is a base? (a) plain water (b) curd (c) orange juice (d) soap solution
11. 11.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
13. 13.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
14. 14.⚖️ 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 turmeric paper (d) the colour we see
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the colour we see
16. 16.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns blue (c) it turns darker red (d) it disappears
18. 18.True or false: lemon juice is an acid. (a) False (b) True
19. 19.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
20. 20.🫧 Which of these is an acid? (a) plain water (b) curd (c) soap solution (d) sugar water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🛟 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
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
25. 25.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a magnet (d) white paper strips
27. 27.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
29. 29.⚖️ 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 number of drops
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) tamarind water
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a comb (d) soap solution
32. 32.🫧 Which of these is an acid? (a) salt water (b) vinegar (c) detergent water (d) baking soda water
33. 33.🫧 Which of these is neutral? (a) detergent water (b) baking soda water (c) lemon juice (d) sugar water
34. 34.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) plain water (d) lemon juice
35. 35.⚖️ 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 change it (c) we measure it
36. 36.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
37. 37.🔍 Which is the odd one out? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
38. 38.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) white paper strips (d) a dropper or spoon
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True

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