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chemistry
periodic table
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Cards (12)
1,2,3,4,5,6,7,0
groups in periodic table
the
group number
tells you how many electrons are in the
outer shell
period number
tells you the
amount
of
shells
in an
element
Group
0
has a
full outer shell
what is an element?
substance
which all
atoms
have
same atomic number
what is an isotope?
atoms
with same number of
protons
but different number of
neutrons
what is a compound?
two
or
more different
atoms
bonded
together
what is a molecule?
two or more atoms bonded together
filteration
is used to
seperate
insoluble
solids from
liquids
crystallisation
is used to
separate
a
soluble salt
from a
solution
how to add relative atomic mass
relative atomic
mass= (%
mass
of
isotope 1
) + (%
mass
of
isotope 2
)
➗100
periods
in the
periodic table
is
rows
