Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 380 · 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 liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
3. 3.🍋 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
4. 4.🫧 Which of these is a base? (a) salt water (b) detergent water (c) curd (d) lemon juice
5. 5.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
6. 6.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
7. 7.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
8. 8.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
9. 9.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
10. 10.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a battery cell (d) yeast
11. 11.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) soap solution (d) salt water
12. 12.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) green (d) bright blue
13. 13.True or false: orange juice is an acid. (a) False (b) True
14. 14.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
16. 16.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
17. 17.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
19. 19.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a mirror (d) turmeric powder
20. 20.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) tamarind water (d) baking soda water
23. 23.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
26. 26.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) white paper strips (d) yeast
27. 27.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
29. 29.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
30. 30.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
31. 31.⚖️ 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 turmeric paper (c) the number of drops (d) the liquid we test
32. 32.True or false: plain water is a base. (a) True (b) False
33. 33.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) soap solution (d) turmeric powder
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a magnet (c) lemon juice (d) turmeric powder
37. 37.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) sugar water (d) baking soda water
38. 38.🫧 Which of these is neutral? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution

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