Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 511 · 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 is the odd one out? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
2. 2.🛟 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
3. 3.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) white paper strips (d) a mirror
5. 5.🫧 Which of these is a base? (a) soap solution (b) salt water (c) curd (d) orange juice
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🍋 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
9. 9.⚖️ 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
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
11. 11.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
12. 12.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) salt water (c) detergent water (d) baking soda water
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) salt water (d) sugar water
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a dropper or spoon (d) a magnet
15. 15.True or false: detergent water keeps turmeric yellow. (a) True (b) False
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a battery cell (d) white paper strips
17. 17.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) vinegar (d) baking soda water
18. 18.True or false: soap solution keeps turmeric yellow. (a) False (b) True
19. 19.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) vinegar
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a mirror (c) a dropper or spoon (d) soap solution
22. 22.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a magnet (d) a prism
23. 23.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
24. 24.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
26. 26.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
27. 27.True or false: water is not needed for the turmeric test. (a) False (b) True
28. 28.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a dropper or spoon (c) yeast (d) a battery cell
29. 29.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.🫧 Which of these is a base? (a) baking soda water (b) lemon juice (c) tamarind water (d) plain water
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.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) baking soda water (d) soap solution
33. 33.True or false: curd is an acid. (a) True (b) False
34. 34.⚖️ 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 colour we see (c) the number of drops (d) the liquid we test
35. 35.True or false: curd is a base. (a) True (b) False
36. 36.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the light we look in (d) the turmeric paper
38. 38.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
39. 39.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) soap solution (c) baking soda water (d) detergent water

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