Lesson two - Diễn đàn
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Diễn đàn » Hóa học đại học và sau đại học » Tiếng Anh chuyên ngành hóa học (English for Special Purposes) » Lesson two (Chemistry: A Blend of Science and Technology)

Lesson two
ProfVietanhNgày: Thứ hai, 2010-04-19, 12:42 PM | Tin nhắn # 1
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Chemistry: A Blend of Science and Technology

Like all scientists, chemists try to describe and explain the world. Chemists start by asking questions such as these:
• Why is natural gas such an effective fuel?
• How can we separate a mixture of crude oil and water?
• Which materials dissolve in water?
• What is rust and why does it form?

To answer these questions, chemists develop models, conduct experiments, and seek patterns. They observe various types of chemical reactions, and they perform calculations based on known data. They build continuously on the work and the discoveries of other scientists. Long before humans developed a scientific understanding of the world, they invented chemical techniques and processes. These techniques and processes included smelting (melting) and shaping metals, growing crops, and making medicines. Early chemists invented technological instruments, such as glassware and distillation equipment. Present-day chemical technologists continue to invent new equipment. They also invent new or better ways to provide products and services that people want. Chemical technologists ask questions such as the following:
• How can we redesign this motor to run on natural gas?
• How can we contain and clean up an oil spill (overflow)?
• What methods can we use, or develop, to make water safe to drink?
• How can we prevent iron objects from rusting?

Vocabulary
effective: hiệu quả, hữu hiệu
separate: tách
dissolve: hòa tan
crude: thô
rust: gỉ (sắt, kim loại)
observe: quan sát
perform: biểu diễn
service: dịch vụ
spill = overflow: tràn ra
prevent: ngăn cản


Phạm Bá Việt Anh

Department of Analytical Chemistry
Faculty of Chemistry
Hanoi National University of Education
Mobile - Tel: (84) 943 919 789
 
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