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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?
At least five temperature points
Only one temperature point
Three temperature points
Exactly seven 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 15 degrees Celsius per minute
He does not recommend a specific heating rate
About 5 degrees Celsius per minute
About 50 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 vacuum
Only humid air
Only air
Both air and inert gas atmospheres
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 transport samples safely between labs
How to conduct thermal stability testing for a new energetic material
How to store the new material after testing
How to design a new decomposition detector
Explanation:
The conversation is about the requirements, methods, and safety precautions for thermal stability testing of a new energetic material.
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