Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 145 · 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? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
2. 2.⚖️ 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
3. 3.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
7. 7.🧺 Which of these is needed for the turmeric test? (a) water (b) a balloon (c) a battery cell (d) a magnet
8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
9. 9.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) turmeric powder (c) lemon juice (d) white paper strips
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) a dropper or spoon (d) turmeric powder
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
12. 12.🟡 Which of these keeps turmeric yellow? (a) plain water (b) baking soda water (c) detergent water (d) soap solution
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
14. 14.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
15. 15.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
16. 16.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
17. 17.🫧 Which of these is an acid? (a) tamarind water (b) soap solution (c) detergent water (d) plain water
18. 18.🫧 Which of these is neutral? (a) tamarind water (b) salt water (c) baking soda water (d) lemon juice
19. 19.⚖️ 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
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
21. 21.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
22. 22.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
24. 24.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
25. 25.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
27. 27.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
28. 28.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
29. 29.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
30. 30.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) lemon juice (d) a magnet
32. 32.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
33. 33.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
34. 34.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) a mirror (d) lemon juice
35. 35.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
36. 36.True or false: curd is neutral. (a) True (b) False
37. 37.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
38. 38.True or false: soap solution keeps turmeric yellow. (a) False (b) True
39. 39.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) lemon juice (d) water

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