物质的分类lesson1-1classificationofmatter

1、Christine Wang General General chemistrychemistryGeneral chemistryAP A-Level K-12SAT ACTBasic bilingual chemistry基础双语化学课程基础双语化学课程Lesson 1-1: Classification of matter 物质物质：matter 纯净物：substance 混合物：混合物：mixture单质：element 化合物：compoundmatter（物质）Anything that has both mass(质质量）量） and volume（体积）（体积）.Exampl

2、es:Sodium chloride (NaCl)Oxygen (O2)Substance（纯净物）Matter with constant(恒定的）恒定的）composition（组成）（组成）.All particles(成分成分) have the same properties(性质）性质）.Examples:Water Helium(He)Element (单质单质)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

3、气）Mixture （混合物）Matter with variable (可变的) composition. Made from two or more substances.Examples:Air(空气)compound （化合物）A substance made from two or more elements, chemically combined.Example:Carbon dioxide (CO2) Phases (states) of matter物质状态Solid LiquidGas aqueouss 固体 l 液体g 气体aq 溶液NaCl (s) a single s

4、ubstance: the NaCl in its solid form. NaCl (aq) a mixture: a mixture of NaCl and water. Contact me:QQ: 2559776060Q名：通用双语化学课程名：通用双语化学课程E-mail Christine WangThanks for watching.Christine Wang单原子单质 VS 双原子单质elementelementmixturemixturecompoundcompoundheterogeneousheterogeneousDiatomicDiatomicphase of ma

5、tterFusion, Fusion, commonly called commonly called melting, is the process by melting, is the process by which a solid becomes a which a solid becomes a liquid.liquid.Solidification, Solidification, or or freezing , is the process by freezing , is the process by which a liquid becomes a which a liq

6、uid becomes a solid.solid.熔化熔化凝固凝固Vaporization , Vaporization , or boiling , is the or boiling , is the process by which a liquid process by which a liquid becomes a gas .becomes a gas .Condensation Condensation is is the process the process by which gas by which gas becomes a liquid.becomes a liqui

7、d. 液化液化汽化汽化Sublimation, Sublimation, is an is an unusual process by which a unusual process by which a solid goes directly to the solid goes directly to the gas phase ,without turning gas phase ,without turning to a liquid first.to a liquid first.Deposition ,Deposition ,the the opposite of sublimati

8、on ,is opposite of sublimation ,is when a gas vapor goes when a gas vapor goes directly into the solid directly into the solid phase without goes into a phase without goes into a liquid first,liquid first,升华升华凝华凝华Evaporation Evaporation is when the liquid on the surface of a sample changes to the ga

9、s phase. The viscosityviscosity of a liquid is its relative resistance to flow. 蒸发蒸发粘性，粘性，粘度粘度review liquiliquid dsolidsolidgas gas ( ( ) )( ( ) )( ( ) )( ( ) )( ( ) )( ( ) )HOMEWORK20个英文化学词汇（中英文、作业本上）熟读前20号元素的英文名（要求对号入座）记忆lesson1-1出现的所有专业词汇，下节课测试RequirementsAttendanceAttendanceA note book and a A n

10、ote book and a textbooktextbookNo talking and cell No talking and cell phones during classphones during classFinish homework and Finish homework and assignment on time assignment on time Chemistry and MatterChemistry and Matter Chemistry is the study of matter and the changes that it undergoes. Matt

11、er is anything that has mass and takes up space. Mass is a measure of the amount of matter.Chemistry and MatterChemistry and Matter There are five traditional branches of There are five traditional branches of chemistrychemistry:Organic chemistry (有机化学） Inorganic chemistry（无机化学）Physical chemistry （物理化学）Analytical chemistry （分析化学） Biochemistry （生物化学） 均匀混合物 非均匀