Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 404 · 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.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
3. 3.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the liquid we test
6. 6.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) detergent water (d) plain water
7. 7.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
8. 8.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
9. 9.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
10. 10.🫧 Which of these is neutral? (a) salt water (b) vinegar (c) soap solution (d) baking soda water
11. 11.True or false: soap solution is an acid. (a) False (b) True
12. 12.True or false: lemon juice is a base. (a) True (b) False
13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
14. 14.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
15. 15.True or false: lemon juice is an acid. (a) False (b) True
16. 16.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) lemon juice (d) a battery cell
17. 17.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) vinegar (c) detergent water (d) soap solution
18. 18.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green
19. 19.True or false: detergent water is a base. (a) False (b) True
20. 20.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
21. 21.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) turmeric powder (d) yeast
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) yeast (c) turmeric powder (d) white paper strips
23. 23.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
24. 24.⚖️ 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
25. 25.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a mirror (d) white paper strips
29. 29.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) sugar water (d) detergent water
30. 30.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) soap solution (d) sugar water
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) lemon juice (d) a balloon
32. 32.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
33. 33.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
34. 34.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) sugar water (d) lemon juice
35. 35.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) baking soda water (d) detergent water
37. 37.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
38. 38.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) a magnet (d) water
39. 39.True or false: tamarind water is a base. (a) False (b) True
40. 40.🔮 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

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