Turmeric Indicator Experiment Worksheet

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

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