物质的分类lesson1-1classification of matter

双语化学基础课程第一课 物质的分类

General chemistryChristine Wang

双语化学基础课程第一课 物质的分类

AP A-Level K-12 SAT ACT Basic bilingual chemistry 基础双语化学课程

General chemistry

双语化学基础课程第一课 物质的分类

Lesson 1-1: Classification of matter

物质：matter 纯净物： substance

混合物： mixture 化合物： compound

单质： element

双语化学基础课程第一课 物质的分类

matter(物质)Anything that has both mass(质 量) and volume(体积). Examples: Sodium chloride (NaCl) Oxygen (O2)

双语化学基础课程第一课 物质的分类

Substance(纯净物) Matter with constant(恒定的) composition(组成). All particles(成分) have the same properties(性质). Examples: Water Helium(He)

双语化学基础课程第一课 物质的分类

Element (单质)A substance made up of atoms (原子)with the same atomic number(原子序数). Examples: Lead(Pb 铅) Sodium(Na 钠) Oxygen (O2 氧气)

双语化学基础课程第一课 物质的分类

Mixture (混合物)Matter with variable (可变的) composition. Made from two or more substances. Examples: Air(空气)

双语化学基础课程第一课 物质的分类

compound (化合物)A substance made from two or more elements, chemically combined. Example: Carbon dioxide (CO2)

双语化学基础课程第一课 物质的分类

Phases (states) of matter物质状态

Solid Liquid Gas aqueous

s l g aq

固体 液体 气体 溶液

NaCl (s) —— a single substance: the NaCl in its solid form. NaCl (aq) —— a mixture: a mixture of NaCl and water.

双语化学基础课程第一课 物质的分类

Contact me: QQ: 2559776060 Q名：通用双语化学课程 E-mail 2559776060@http://www.77cn.com.cn Christine Wang

双语化学基础课程第一课 物质的分类

Thanks for watching.Christine Wang

双语化学基础课程第一课 物质的分类

单原子单质

VS

双原子单质

双语化学基础课程第一课 物质的分类

elementmixture compound heterogeneous Diatomic

双语化学基础课程第一课 物质的分类

双语化学基础课程第一课 物质的分类

phase of matter

Fusion, commonly calledmelting, is the process by which a solid becomes a liquid.

熔化

Solidification, or freezing , is 凝固the process by which a liquid becomes a solid.

双语化学基础课程第一课 物质的分类

Vaporization , or

boiling , is the process by which a liquid becomes a gas .

汽化

Condensation is theprocess by which gas becomes a liquid.

液化