whatischemistry郑州大学化学系级王华.pptVIP

What is Chemistry? Chemistry is such a broad, all-encompassing area of study that people almost despair in trying to define it. 化学是一个如此广泛的、涵盖一切的学科领域，以至于人们在尝试给它下定义时几乎绝望了。 事实上，有些人采取一种逃避的办法，把化学定义为“化学家们所做的”。但是那行不通，它的视野范围太狭窄了。 Your body itself is a remarkable chemical factory. You eat and breathe, taking in raw materials for the factory. You convert these supplies into an unbelievable array of products, some incredibly complex. This chemical factory -- your body also generates its own energy. It detects its own malfunctions and can regenerate and repair some of its component parts. Chemistry affects society as well as individuals. Chemistry is the language and the principal tool of the biological sciences, the health sciences, and the agricultural and earth sciences. Knowledge of chemistry has already had a profound effect on the quality of life. Its impact on the future will be even more dramatic. At present we can control diabetes, cure some forms of cancer, and prevent some forms of mental retardation because of our understanding of the chemistry of the body. We can’t cure diabetes or cure all forms of cancer or all mental retardation, because our knowledge is still limited. So learn as much as you can. Your work will be enhanced and your life enriched by your greater understanding. Be prepared. Something good might happen to you and to others because of you。 * * Chemistry=world？？ Indeed, some have taken a cop-out approach by defining chemistry as “what chemists do”. But that won’t do; it’s much too narrow a view. Chemistry is we all do. We bathe, clean, and cook. We put chemicals on our faces, hands, and hair.我们每个人的活动都牵涉到化学。我们洗浴、做清洁、烹调食物。我们把一些化学制品用在脸上、手上和头发上。 Collectively, we use tens of thousands of consumer chemical products in our homes. 总起来说，我们在家庭中使用上万种消费化学品。 Professionals in the health and life sciences use thousands of additional chemicals as drugs, antiseptics, or reagents for diagnostic tests. 保健和生命科学的专家们用各种各样的化学品作为药物、杀菌剂或诊断测试的试剂。 你的身体本身就是一个不同