Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 737 · 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.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the light we look in (c) the turmeric paper (d) the colour we see
3. 3.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a battery cell (d) turmeric powder
4. 4.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) lemon juice (d) a balloon
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the liquid we test (d) the colour we see
8. 8.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
9. 9.True or false: detergent water keeps turmeric yellow. (a) True (b) False
10. 10.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
11. 11.🫧 Which of these is an acid? (a) salt water (b) baking soda water (c) lemon juice (d) sugar water
12. 12.⚖️ 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 turmeric paper
13. 13.🫧 Which of these is neutral? (a) vinegar (b) plain water (c) soap solution (d) detergent water
14. 14.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
15. 15.True or false: soap solution is neutral. (a) True (b) False
16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
17. 17.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
18. 18.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
19. 19.True or false: a comb is needed for the turmeric test. (a) True (b) False
20. 20.⚖️ 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
21. 21.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) vinegar (c) tamarind water (d) lemon juice
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) soap solution (c) lemon juice (d) turmeric powder
25. 25.True or false: a mirror is needed for the turmeric test. (a) True (b) False
26. 26.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) lemon juice (d) a comb
27. 27.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
28. 28.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a balloon (c) a mirror (d) a magnet
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) vinegar (d) lemon juice
32. 32.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) yeast (c) a dropper or spoon (d) water
33. 33.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
34. 34.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
36. 36.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
37. 37.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
38. 38.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
39. 39.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish

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