Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 710 · 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? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
4. 4.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
5. 5.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution
6. 6.⚖️ 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
7. 7.🛟 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
8. 8.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
9. 9.⚖️ 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 measure it (c) we change it
10. 10.True or false: orange juice is a base. (a) True (b) False
11. 11.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
12. 12.⚖️ 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
13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
14. 14.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
15. 15.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) plain water (d) vinegar
16. 16.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
18. 18.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
19. 19.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) vinegar (d) tamarind water
21. 21.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
22. 22.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
24. 24.True or false: plain water is a base. (a) True (b) False
25. 25.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
27. 27.🫧 Which of these is a base? (a) sugar water (b) lemon juice (c) soap solution (d) tamarind water
28. 28.⚖️ 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
29. 29.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
30. 30.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
31. 31.True or false: lemon juice is an acid. (a) False (b) True
32. 32.🍋 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
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
34. 34.True or false: orange juice is an acid. (a) False (b) True
35. 35.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
36. 36.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
37. 37.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
38. 38.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) yeast (d) a dropper or spoon
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the colour we see (d) the liquid we test
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) baking soda water (d) vinegar

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