Chapter 1: Chemistry is a science of change a water molecule is consisted of one oxygen(氧) atom and two hydrogen(氢) atoms A cup of water contains about 1024 water molecules Looking at he World of Aroms and Molecules 化 学
Chapter 1: Chemistry is a Science of Change A water molecule is consisted of one oxygen (氧) atom and two hydrogen (氢) atoms. A cup of water contains about 1024 water molecules
Chemistry is the study of how atoms(原子) combine to form materials.(化学是研究原子组合成材料 的科学) How many different types of atom: 114 so far They are listed (according to their structure and properties) in the periodic table(元素周期表)
Chemistry is the study of how atoms (原子) combine to form materials. (化学是研究原子组合成材料 的科学) How many different types of atom: 114 so far. They are listed (according to their structure and properties) in the periodic table (元素周期表)
Modern periodic Table IA 3 151617 3A 4A 5A 6A 7A HI 6 3B SB 6B 7B 8B IB 2B 1 21 Period I M 46 51 Nb Mo Te Ru Rh A d In sb oD n At R 7)1;8 Metals s岛劉〓闢 Lu Metalloids s;Ⅻc黜 2.4
Period Group Alkali Metal Noble Gas Halogen Alkali Earth Metal 2.4
MASS VoLUME 102L 102L g Earths atmosphere Earth Earth's atmosphere 101L F Living matter on Earth-H10g Lake Superior MACROSCO Total human population-L10g Petroleum burned each day in the U.S 10°g olympic-sized swimming pool 10°g 1 liter of water--10'g 10PL-HHuman body 10°g L Aspirin tablet Golf ball °L Red blood cell MICROSCOPIC 1015L Bacterium virus 10g SUBMICROSCOPIC 10 24L Water molecule 21 Water molecule Oxygen atom 10 drogen atom
Some atoms link together to form molecules(分子 and molecules are organized to form materials So Chemistry can also be defined as the study of matter and the transformations it can go.(化学 是研究物质和物质转变的科学) Now millions of molecules have been found or synthesized(合成, and they form the complexity of the earth and the life The materials can be alloys, fertilizers pharmaceuticals, polymers, computer chips, DNA, and more
Some atoms link together to form molecules (分子) and molecules are organized to form materials. So Chemistry can also be defined as the study of matter and the transformations it can go. （化学 是研究物质和物质转变的科学） Now millions of molecules have been found or synthesized (合成), and they form the complexity of the earth and the life. The materials can be alloys, fertilizers, pharmaceuticals, polymers, computer chips, DNA, and more