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Listening Quiz: Thử Nghiệm Độ Ổn Định Nhiệt Cho Vật Liệu Năng Lượng Mới – Advanced Level
Th10 26, 2025
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bởi
Anna Phạm
trong
Tiếng Anh Hóa Học (English for Chemistry)
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1.
How many temperature points should be used for the thermal stability test?
Exactly seven temperature points
Only one temperature point
At least five temperature points
Three temperature points
Explanation:
Mark says they should use at least five temperature points, ranging from room temperature to decomposition temperature.
2.
What heating rate does Mark recommend for the tests?
About 5 degrees Celsius per minute
About 50 degrees Celsius per minute
He does not recommend a specific heating rate
About 15 degrees Celsius per minute
Explanation:
Mark says a slow heating rate, around 5 degrees Celsius per minute, is best.
3.
Which atmosphere conditions are necessary during testing?
Only air
Only humid air
Both air and inert gas atmospheres
Only vacuum
Explanation:
Mark says both air and inert gas atmospheres are necessary.
4.
What method is mentioned for identifying decomposition products?
X-ray diffraction
Ultrasonic scanning
Gas chromatography
Infrared photography
Explanation:
Emily asks whether they should analyze decomposition products, and Mark says gas chromatography can help identify them.
5.
What are Mark and Emily mainly discussing?
How to design a new decomposition detector
How to transport samples safely between labs
How to conduct thermal stability testing for a new energetic material
How to store the new material after testing
Explanation:
The conversation is about the requirements, methods, and safety precautions for thermal stability testing of a new energetic material.
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