Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 159 · 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.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
3. 3.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) water (d) a magnet
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
7. 7.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
8. 8.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
9. 9.🫧 Which of these is an acid? (a) baking soda water (b) curd (c) soap solution (d) plain water
10. 10.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
12. 12.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) turmeric powder (d) yeast
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
16. 16.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
17. 17.⚖️ 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 liquid we test (c) the turmeric paper (d) the light we look in
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
20. 20.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
21. 21.🧺 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) turmeric powder
22. 22.True or false: lemon juice is neutral. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
24. 24.🫧 Which of these is neutral? (a) tamarind water (b) baking soda water (c) soap solution (d) plain water
25. 25.🫧 Which of these is neutral? (a) vinegar (b) orange juice (c) baking soda water (d) sugar water
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a magnet (d) lemon juice
27. 27.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
28. 28.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
29. 29.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
30. 30.True or false: salt water keeps turmeric yellow. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
32. 32.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
33. 33.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue
34. 34.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
36. 36.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.True or false: orange juice is an acid. (a) False (b) True
38. 38.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) white paper strips (d) yeast
39. 39.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
40. 40.⚖️ 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

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