Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 679 · 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? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
2. 2.True or false: yeast is needed for the turmeric test. (a) False (b) True
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
4. 4.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a magnet (c) a battery cell (d) a mirror
6. 6.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a mirror (c) lemon juice (d) a dropper or spoon
7. 7.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
8. 8.⚖️ 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 number of drops (c) the turmeric paper (d) the liquid we test
9. 9.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
10. 10.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) plain water (d) detergent water
12. 12.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
13. 13.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
15. 15.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
16. 16.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
17. 17.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) plain water (d) orange juice
18. 18.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) bright blue (d) reddish-brown
20. 20.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns yellow again (d) it turns darker red
21. 21.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
22. 22.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) detergent water (d) vinegar
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
24. 24.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
26. 26.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
27. 27.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
28. 28.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) salt water (d) lemon juice
33. 33.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.True or false: vinegar is an acid. (a) False (b) True
36. 36.True or false: tamarind water is neutral. (a) True (b) False
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) turmeric powder (c) soap solution (d) water
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
40. 40.True or false: salt water keeps turmeric yellow. (a) True (b) False

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