包邮化学:中心科学

本书特色

  该书已经再版9次，4位作者都曾经多次获得过不同层次的
教学奖。它为学生设计了一个学习系统，这个系统从构建概念
框架(Building a Conceptual Framework)、解题(Problem
Solving)、可视化(Visualization)、应用(Applications)四
个方面构建。每一方面通过若干模块实现。例如构建概念框架
通过每章开头的What's Ahead、Give It Some Thought检验对
概念的理解、每章结尾的Visualizing Concepts三个模块逐层加
深概念的理解。对于学生而言，本教材提供了核心的、不
可缺少的学习工具，无论是用作学习、提高，还是参考、
准备考试，都能胜任。对于老师也有很好的参考价值。

内容简介

简介 　　该书已经再版9次，4位作者都曾经多次获得过不同层次的教学奖。它为学生设计了一个学习系统，这个系统从构建概念框架（blfilding a cornceptual frarnework）、解题（problem solvirlq）、可视化（visualizatiorl）、应用（applicatiorls）四个方面构建。每一方面通过若干模块实现，例如构建概念框架通过每章开头的what's ahead、give it some thought检验对概念的理解、每章结尾的visualizirlg concepts三个模块逐层加深概念的理解。对于学生而言，本教材提供了核心的、不可缺少的学习工具，无论是用作学习、提高，还是参考、准备考试，都能胜任。对于老师也有很好的参考价值。

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插图：Introduction and Section 1.1 Chemistry is the studyof the composition, structure, properties, and changes ofmatter. The composition of matter relates to the kinds ofelements it contains. The structure of matter relates to theways the atoms of these elements are arranged. Aproperty is any characteristic that gives a sample of mat-ter its unique identity. A molecule is an entity composedof two or more atoms with the atoms attached to one an-other in a specific way.Section 1.2 Matter exists in three physical states, gas,liquid, and solid, which are known as the states of mat-ter. There are two kinds of pure substances: elementsand compounds. Each element has a single kind of atomand is represented by a chemical symbol consisting ofone or two letters, with the first letter capitalized. Com-pounds are composed of two or more elements joinedchemically. The law of constant composition, also calledthe law of definite proportions, states that the elementalcomposition of a pure compound is always the same.Most matter consists of a mixture of substances. Mixtureshave variable compositions and can be either homoge-neous or heterogeneous; homogeneous mixtures arecalled solutions.Section 1.3 Each substance has a unique set ofphysical properties and chemical properties that can beused to identify it. During a physical change, matterdoes not change its composition. Changes of state arephysical changes. In a chemical change （chemical reac-tion） a substance is transformed into a chemically differ-ent substance. Intensive properties are independent ofthe amount of matter examined and are used to identifysubstances. Extensive properties relate to the amount ofsubstance present. Differences in physical and chemicalproperties are used to separate substances.The scientific method is a dynamic process used toanswer questions about our physical world. Observationsand experiments lead to scientific laws, general