Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 142 · 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: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a comb (d) white paper strips
5. 5.⚖️ 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 turmeric paper (d) the light we look in
6. 6.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) lemon juice (d) a balloon
7. 7.True or false: soap solution keeps turmeric yellow. (a) True (b) False
8. 8.True or false: a comb is needed for the turmeric test. (a) False (b) True
9. 9.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
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 keep it the same (c) we change it
12. 12.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
13. 13.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) lemon juice
14. 14.True or false: salt water is an acid. (a) True (b) False
15. 15.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) curd (d) vinegar
16. 16.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
17. 17.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) white paper strips (d) a magnet
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
19. 19.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a comb (d) soap solution
20. 20.🫧 Which of these is a base? (a) detergent water (b) salt water (c) vinegar (d) plain water
21. 21.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) a dropper or spoon (d) a balloon
23. 23.True or false: orange juice is an acid. (a) True (b) False
24. 24.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) detergent water (d) lemon juice
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) turmeric powder (d) soap solution
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
28. 28.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) soap solution (c) white paper strips (d) water
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
30. 30.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
31. 31.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
32. 32.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
33. 33.True or false: lemon juice is a base. (a) False (b) True
34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
35. 35.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
37. 37.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) water (d) a mirror
39. 39.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) baking soda water (d) tamarind water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in

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