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Опубликованно: 19.09.2003.
Язык: Английский
Уровень: Средняя школа
Литературный список: Нет
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  • Эссе 'Metallic and Ionic bonding.', 1.
  • Эссе 'Metallic and Ionic bonding.', 2.
  • Эссе 'Metallic and Ionic bonding.', 3.
Фрагмент работы

Metals:
-Good conductors of electricity
-Good conductors of Heat
-Lustrous or reflective when freshly cut or polished
-Malleable ? can be shaped by beating
-Ductile ? can be drawn into a wire
-Exihibit a range of melting and boiling temperatures
-Generally have high densities
Exceptions in metals:
-Mercury ? liquid at room temperature, unusually low melting point.
-Chromium ? brittle rather than malleable.
Structure of Metals
Model of metal in solid state must be one in which:
-Some of particles are charged and free to move
-There are strong forces between particles throughout metal latt…

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