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Презентация, доклад по теме Физические свойства металлов
Содержание
The uses of metals are based upon their physical or chemical properties.Metals vary in density, hardness, heat and electrical conductivity and weight.The lightest is lithium and the heaviest is osmium.
Слайд 2The uses of metals are based upon their physical or chemical
properties.
Metals vary in density, hardness, heat and electrical conductivity and weight.
The lightest is lithium and the heaviest is osmium.
Metals vary in density, hardness, heat and electrical conductivity and weight.
The lightest is lithium and the heaviest is osmium.
Слайд 3
The hardness of metals depends upon the presence of other substances
in them and the nature of metals itself.
Metals are the nest conductors of heat and electricity.
The most widely used metals are: iron, copper, zinc, tin, lead, mercury, silver and gold.
Metals are the nest conductors of heat and electricity.
The most widely used metals are: iron, copper, zinc, tin, lead, mercury, silver and gold.
Слайд 4The most important metal is iron.
Nowadays, aluminium, magnesium and sodium have
become common due to the development of electrochemical processes of their production.
Слайд 5Nowadays, aluminium, magnesium and sodium have become common due to the
development of electrochemical processes of their production.
Metals occur most commonly as oxides of sulphides in ores.
Metals occur most commonly as oxides of sulphides in ores.
