Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 589 · 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.True or false: curd is a base. (a) True (b) False
2. 2.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a magnet (d) water
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) lemon juice (c) soap solution (d) a dropper or spoon
6. 6.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
7. 7.⚖️ 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 light we look in (c) the turmeric paper (d) the liquid we test
8. 8.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
9. 9.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) baking soda water (d) orange juice
10. 10.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
11. 11.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it disappears (d) it turns darker red
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
14. 14.True or false: plain water keeps turmeric yellow. (a) False (b) True
15. 15.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
16. 16.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) vinegar (d) sugar water
18. 18.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
19. 19.True or false: sugar water is neutral. (a) False (b) True
20. 20.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) a mirror (d) a dropper or spoon
21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a comb (d) soap solution
23. 23.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
25. 25.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
26. 26.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
27. 27.True or false: soap solution is needed for the turmeric test. (a) True (b) False
28. 28.True or false: soap solution is neutral. (a) False (b) True
29. 29.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) your school uniform (d) a white party dress
30. 30.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
32. 32.True or false: vinegar keeps turmeric yellow. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) soap solution (d) vinegar
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) turmeric powder (d) yeast
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) baking soda water (d) plain water
36. 36.⚖️ 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
37. 37.🫧 Which of these is a base? (a) curd (b) lemon juice (c) baking soda water (d) sugar water
38. 38.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) detergent water (c) lemon juice (d) vinegar
39. 39.True or false: salt water is an acid. (a) True (b) False
40. 40.⚖️ 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

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