Turmeric Indicator Experiment Worksheet

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

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