Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 285 · 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 of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
3. 3.True or false: soap solution is neutral. (a) True (b) False
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) lemon juice (d) a comb
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
7. 7.⚖️ 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 measure it (c) we change it
8. 8.True or false: sugar water is an acid. (a) True (b) False
9. 9.True or false: salt water is neutral. (a) False (b) True
10. 10.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) a magnet (d) an indicator
11. 11.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
12. 12.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
13. 13.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) soap solution (d) sugar water
17. 17.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) white paper strips (d) a comb
18. 18.True or false: orange juice is neutral. (a) True (b) False
19. 19.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) white paper strips (c) turmeric powder (d) a dropper or spoon
20. 20.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) white paper strips (c) water (d) lemon juice
22. 22.⚖️ 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 light we look in (d) the colour we see
23. 23.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) a mirror (d) water
24. 24.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) plain water (d) detergent water
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a battery cell (c) white paper strips (d) turmeric powder
26. 26.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
27. 27.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
28. 28.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
30. 30.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is an acid (d) soap is magnetic
33. 33.⚖️ 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
34. 34.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
35. 35.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.🫧 Which of these is neutral? (a) baking soda water (b) salt water (c) vinegar (d) lemon juice
37. 37.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) yeast
39. 39.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a magnet (d) yeast
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base

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