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Law of conservation of mass
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Relative formula mass
Law of conservation of mass
8 cards
Cards (20)
The
atoms
join together
in
different ways
to
form products
The law of
conservation
of
mass
states that
no atoms
are
lost
or
made
in a
chemical reaction
The sum of the relative
formula
masses of the
reactants
is equal to the sum of the relative formula masses of the
products
In a
balanced
symbol equation, the number of
atoms
of each
element
is the
same
on
both
sides of the equation
The
total mass
of the
products
is equal to the
total mass
of the
reactants
Copper reacts with
oxygen
to form
copper oxide
Mar 3
No
substances
can
enter
or
leave
a closed system
Gas
is
gained
The total
mass
will look as if it has
increased
Gas escapes
The total
mass
will look as if it has
decreased
Substances can
enter
or
leave
a non-enclosed system
The total mass stays the same if the
mass
of the
gas
is included
Reactions in closed systems
Total
mass
of the system stays the
same
during the reaction
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