Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 925 · 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? True or false: the colour we see is the one thing we change. (a) False (b) True
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) tamarind water (c) salt water (d) vinegar
3. 3.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
4. 4.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) tamarind water (d) soap solution
5. 5.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
6. 6.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
7. 7.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
8. 8.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
9. 9.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) curd (d) sugar water
10. 10.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
11. 11.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
13. 13.🫧 Which of these is a base? (a) plain water (b) sugar water (c) baking soda water (d) lemon juice
14. 14.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) lemon juice (d) soap solution
15. 15.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.True or false: a magnet is needed for the turmeric test. (a) True (b) False
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the colour we see
18. 18.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) soap solution (d) a battery cell
19. 19.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) white paper strips (c) soap solution (d) turmeric powder
21. 21.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the colour we see
23. 23.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
24. 24.🫧 Which of these is a base? (a) detergent water (b) curd (c) vinegar (d) sugar water
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) sugar water (d) lemon juice
26. 26.⚖️ 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
27. 27.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
29. 29.🫧 Which of these is an acid? (a) orange juice (b) salt water (c) soap solution (d) sugar water
30. 30.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
31. 31.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) your school uniform (d) a white party dress
32. 32.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
33. 33.True or false: orange juice is an acid. (a) True (b) False
34. 34.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) tamarind water (d) soap solution
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
38. 38.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
39. 39.⚖️ 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
40. 40.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) plain water

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