Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 921 · 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.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
2. 2.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
3. 3.🫧 Which of these is a base? (a) vinegar (b) detergent water (c) salt water (d) curd
4. 4.🫧 Which of these is an acid? (a) tamarind water (b) plain water (c) sugar water (d) soap solution
5. 5.True or false: plain water is an acid. (a) True (b) False
6. 6.🫧 Which of these is a base? (a) tamarind water (b) curd (c) sugar water (d) baking soda water
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.True or false: plain water keeps turmeric yellow. (a) True (b) False
9. 9.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) turmeric powder (d) a comb
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) turmeric powder (d) a magnet
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 keep it the same (c) we change it
14. 14.🛟 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
15. 15.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) white paper strips (d) a battery cell
17. 17.🫧 Which of these is neutral? (a) vinegar (b) tamarind water (c) orange juice (d) plain water
18. 18.🛟 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
19. 19.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
20. 20.True or false: curd is an acid. (a) False (b) True
21. 21.True or false: detergent water keeps turmeric yellow. (a) False (b) True
22. 22.True or false: detergent water is a base. (a) False (b) True
23. 23.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
25. 25.🫧 Which of these is an acid? (a) sugar water (b) lemon juice (c) baking soda water (d) salt water
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a mirror (d) turmeric powder
27. 27.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.⚖️ 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
30. 30.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the colour we see
32. 32.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
33. 33.True or false: soap solution keeps turmeric yellow. (a) False (b) True
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
35. 35.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) bright blue (d) it stays white
37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
38. 38.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) salt water (d) plain water
39. 39.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
40. 40.⚖️ 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 colour we see (d) the liquid we test

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