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 the World of Atoms and Molecules 化
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(5 f)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 A 13141516 3A 4A 5A 6A N 03 4567 01121 6 17 0iL 2 38 4B SB 6B 7B 8B IB 2B Alsa S 21 Ped副副回圆图要高 72 73 74 76 Hf Ta W R Metals s e m m sm ea ca i Ds Er m r Lu Metalloid Nonmetals 2.4
Period Group Alkali Metal Noble Gas Halogen Alkali Earth Metal 2.4
MASS VoLUME eArthe Earth's atmosphere--104g 1024L Earth 102L arths atmosphere n Living matter on Earth-108g 1015L Lake Superior Total human population_h10'gMa LACROSCOPIC 1012L 102g 10L--Petroleum burned each day in the U.S 10°g lympic-sized swimming po 10°g I liter of water--10'g 10PL-HHuman body 10°g 10L Aspirin tablet Golf ball 105 Grain of sal 10L ed blood cell MICROSCOPIC ISL TL 102L 10g SUBMICROSCOPIC 10 24L Water molecule 1027L+Watermolecule Oxygen atom rogen 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