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GRASP THE ATOM AND YOU CAN KNOW... (PROTONS (are positive charges, are the…
GRASP THE ATOM AND YOU CAN KNOW...
PROTONS
are positive charges
are the same as a H+ ion
are inside the nucleus
the number of protons = the Atomic Number
have the mass as a neutron
ELECTRONS
are tiny compared to P or N
are negative charges
conduction of electricity
in circuits
electrons are charges
Charge is measured in Coulombs (C)
Current is a flow of charges
Q = I x t
I = current, measured in AMPS (A)
Resistance reduces the flow of electrons in circuits
Delocalised electrons can move freely allowing flow of charge
in metals
in graphite
in graphene
conduction of heat
caused by vibration of particles
are the same as beta radiation
are arranged in shells around the nucleus
shells can hold 2,8,8,18
Number of electrons in the outer shell =
group in the periodic table
eg: 7 electrons in outer shell = Group 7 element
number of electrons = number of protons in a neutral atom
NEUTRONS
are neutral - they have no charge
ISOTOPES
are elements with the same atomic number but different mass number
are elements with the same number of protons but different number of neutrons
are inside the nucleus
have the same mass as a proton