Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 201 · 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.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
3. 3.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
4. 4.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
5. 5.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
6. 6.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
7. 7.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) a battery cell (d) turmeric powder
8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
9. 9.True or false: salt water is neutral. (a) True (b) False
10. 10.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
11. 11.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
12. 12.True or false: water is needed for the turmeric test. (a) True (b) False
13. 13.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) baking soda water (d) vinegar
15. 15.⚖️ 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 light we look in (d) the liquid we test
16. 16.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
18. 18.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
20. 20.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
21. 21.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a pulley (d) a magnet
22. 22.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
23. 23.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
26. 26.True or false: a comb is not needed for the turmeric test. (a) False (b) True
27. 27.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
28. 28.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) baking soda water (d) tamarind water
29. 29.⚖️ 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 turmeric paper (d) the liquid we test
30. 30.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
31. 31.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
32. 32.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) detergent water (d) vinegar
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
34. 34.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
35. 35.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
38. 38.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
40. 40.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue

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