Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 125 · 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 of these is neutral? (a) tamarind water (b) lemon juice (c) salt water (d) soap solution
2. 2.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
3. 3.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) baking soda water (c) detergent water (d) soap solution
4. 4.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.True or false: detergent water keeps turmeric yellow. (a) True (b) False
9. 9.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) yeast (d) lemon juice
13. 13.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
14. 14.True or false: vinegar is an acid. (a) True (b) False
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
16. 16.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
17. 17.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
18. 18.True or false: vinegar keeps turmeric yellow. (a) False (b) True
19. 19.⚖️ 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
20. 20.🍋 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
21. 21.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) a mirror (d) lemon juice
22. 22.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
25. 25.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
26. 26.True or false: lemon juice is neutral. (a) True (b) False
27. 27.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
28. 28.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
29. 29.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
30. 30.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
31. 31.🫧 Which of these is a base? (a) plain water (b) vinegar (c) orange juice (d) soap solution
32. 32.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) plain water (d) baking soda water
34. 34.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) a magnet (d) water
35. 35.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
37. 37.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
38. 38.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) soap solution (d) a dropper or spoon

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