7/25/2019 A Chemical Property
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Achemical property, meanwhile, is any of a material's properties
that becomes evident
during a chemical reaction; that is, any quality that can be
established only by changinga substance's chemical identity.
Chemical properties cannot be determined just byviewing or touching
the substance; the substance's internal structure must be
affectedfor its chemical properties to be investigated.
Physical Properties
Physical properties are properties that can be measured or
observed without changingthe chemical nature of the substance. Some
eamples of physical properties are!
color "intensive#
density "intensive#
volume "etensive#
mass "etensive#
boiling point"intensive#! the temperatureat which a substance
boils melting point"intensive#! the temperature at which a
substance melts
Physical properties
$atter has mass and volume, as demonstrated by this concrete
bloc%. &ou can observe
its mass by feeling how heavy it is when you try to pic% it up;
you can observe its
volume by loo%ing at it and noticing its sie. $ass and volume
are both eamples of
etensive physical properties.
Chemical Properties
(emember, the definition of a chemical property is that
measuring that property mustlead to a change in the substance's
chemical structure. )ere are several eamples ofchemical
properties!
)eatof combustionis the energyreleased when a
compoundundergoes
complete combustion "burning# with oygen. *he symbol for the
heat of combustion is+)c.
Chemical stability refers to whether a compound will react with
water or air"chemically stable substances will not react#.
)ydrolysis and oidationare two suchreactions and are both chemical
changes.
lammability refers to whether a compound will burn when eposed
to flame.
-gain, burning is a chemical reactioncommonly a high/temperature
reaction in thepresence of oygen.
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