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 THE
PERIODIC TABLE
4.3 - Metals, Nonmetals and Semimetals
4.3.1 - The Properties of the Metals
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- most of the metals are naturally occurring
elements with the exceptions of some
short-lived
metals that are radioactive
(i.e. these short-lived metals are
transition
metals and
inner
transition metals)
- metals have shiny metallic luster
- metals conduct electricity and heat
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- metals are malleable, so they can be
hammered into different shapes
- metals are ductile, so they can be
drawn into thin wire
- metals are high in density. Of all
the metals, lead is the highest in density
- metals have high melting points and
most are solids at room temperature
- mercury is the only metal that is a
liquid at room temperature
- cesium and gallium
have low melting points; (melting points
are less than 30oC)
- metals do not combine chemically with each
other, but react with nonmetals
to form compounds
- of all the metals, Group
IA (i.e. alkali metals) are the most reactive
- metals near the center of the periodic
table are less reactive
- less reactive metals are more likely to be found in nature as uncombined
elements (i.e. copper, silver, gold)
- reactive metals such as the
alkali metals are never found as uncombined elements (i.e. lithium,
sodium)
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Section 3.7
 Division
of Elements ..p68
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