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The atom, cathode ray, is the smallest part of, determine, determine -…
The atom
mass number (a)
also called
nucleon number
sum of protons neutrons
Structure
is made up of
Shells
electron
mostly empty space
is made up of
Nucleus
nucleons
has
Proton
Relative mass (1)
atomic number (z)
has
Neutron
relative mass (1)
Elements
Periodic table
Mass number (proton+neutron)
symbol
are found in combination as
compounds
make up
substance
atomic number
isotopes
radioactive
called
radioisotopes
non radioactive
if gain or lose electron, it becomes
ions
are
charge atoms
positive ion
negative ion
Experiment with subatomic particle
cathode ray
is the smallest part of
determine
determine