Save
chemistry
atoms
Save
Share
Learn
Content
Leaderboard
Learn
Created by
milli
Visit profile
Cards (19)
atoms contain
protons
,
neutrons
and
electrons
the nucleus is in the
middle
of the cell
nucleus contains
protons
and
neutrons
nucleus has a
positive
charge due to
protons
electrons
are in shells around the
nucleus
electrons have a
negative
charge
electrons mass is
very small
neutrons have a
neutral
charge
neutrons have a mass of
1
protons have a
positive
charge
protons
mass
is
1
atoms have no
overall charge
as number of
protons
and
electrons
is
equal
mass number= number of
protons
+ number of
neutrons
atomic number tells u the
amount
of
protons
amount of
protons
=
amount of electrons
compounds are substances that are made up of
two
or more
elements chemically
combined
an
element
is substance made up of only
one
type of atom, e.g.
hydrogen
a mixture is a substance that contains
two
or more different
elements
or
compounds
that are not
chemically
combined
isotopes are different forms of the same
element
with the same number of
protons
but different number of
neutrons