Clil Module Periodic Table Of The Elements Worksheet - Prof.ssa Elena Tibaldi - Istituto Sant''Anna - 2012-2013 Page 16
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48THE CLASSIFICATION OF THE ELEMENTS
METALS
NON-METALS
Most of the elements are metals
Usually gas at room temperature,
Usually solid at room temperature,
exceot for bromine which is liquid
except for mercury which is liquid
Poor electricity and heat conductors
Good electricity and heat conductors
Different degree of reactivity
Different degree of reactivity
C, N, P, O, S, Se; F, Cl, Br, I,
He, Ne, Ar. Fr. Xe, Rn
METALLOIDS
Properties are intermediate
between metals and non-metals
B, Si, Ge, As, Sb, Te, Po, At
Electric conducibility depends on
the temperature (i.e Silicon and
germanium are good conductors
at high temperatures)
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