Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 223 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
3. 3.⚖️ 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 change it (c) we measure it
4. 4.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) baking soda water (c) plain water (d) lemon juice
6. 6.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
7. 7.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) soap solution (d) vinegar
8. 8.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
9. 9.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
10. 10.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) a dropper or spoon (d) lemon juice
12. 12.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) turmeric powder (d) soap solution
14. 14.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
15. 15.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) detergent water (d) soap solution
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the light we look in
18. 18.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
20. 20.True or false: vinegar is an acid. (a) False (b) True
21. 21.🫧 Which of these is an acid? (a) plain water (b) orange juice (c) soap solution (d) baking soda water
22. 22.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) sugar water (d) lemon juice
24. 24.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) a mirror (d) water
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
27. 27.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a magnet (d) a prism
28. 28.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
29. 29.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) plain water (d) soap solution
31. 31.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a battery cell (d) white paper strips
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) yeast (d) lemon juice
35. 35.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
36. 36.True or false: salt water is a base. (a) True (b) False
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
38. 38.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
40. 40.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown

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