Elements elements are broadly classified into metals and non-metals. State 6 general differences in physical properties of metals and non-metals. State two methods & 2 non- metals which contradict with the general physical properties - giving reasons. State one difference in property between metals and noble gases.
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Answer:
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Explanation:
Non metal properties:
may be solid, liquid or gas at room temperature.
has lower melting point than metals.
has lower boiling point than metals.
non-lustrous - dull, not shiny.
poor conductors of heat.
poor conductors of electricity.
brittle - break when stretched.
low tensile strength - easily broken.
Metal Physical Properties:
Lustrous (shiny)
Good conductors of heat and electricity.
High melting point.
High density (heavy for their size)
Malleable (can be hammered)
Ductile (can be drawn into wires)
Usually solid at room temperature (an exception is mercury)
Opaque as a thin sheet (can't see through metals)
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Answer:
Non metal properties:
may be solid, liquid or gas at room temperature.
has lower melting point than metals.
has lower boiling point than metals.
non-lustrous - dull, not shiny.
poor conductors of heat.
poor conductors of electricity.
brittle - break when stretched.
low tensile strength - easily broken.
Metal Physical Properties:
Lustrous (shiny)
Good conductors of heat and electricity.
High melting point.
High density (heavy for their size)
Malleable (can be hammered)
Ductile (can be drawn into wires)
Usually solid at room temperature (an exception is mercury)
Opaque as a thin sheet (can't see through metals)
Explanation:
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