Atomic structure and isotopes (AQA GCSE Chemistry): Flashcards
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15 cards from this deck
Three types of particles in atoms
Three types of particles in atoms
Protons, neutrons, electrons
Charge and mass of a proton
Charge and mass of a proton
+1 charge, mass of 1
Charge and mass of a neutron
Charge and mass of a neutron
No charge (neutral), mass of 1
Charge and mass of an electron
Charge and mass of an electron
-1 charge, very little mass
Location of protons and neutrons
Location of protons and neutrons
Nucleus (centre of atom)
Location of electrons in atom
Location of electrons in atom
Shells/energy levels around nucleus
Mass number (atomic notation)
Mass number (atomic notation)
Total number of protons + neutrons
Atomic number (atomic notation)
Atomic number (atomic notation)
Number of protons only
Radius of an atom
Radius of an atom
metres (0.1 nanometres)
Size of nucleus compared to atom
Size of nucleus compared to atom
Less than 1/10000th the size of atom
Where almost all atom's mass is located
Where almost all atom's mass is located
In the nucleus
Definition of isotopes
Definition of isotopes
Atoms of same element with different neutrons
Same feature in all isotopes of an element
Same feature in all isotopes of an element
Same number of protons (atomic number)
Different features in isotopes
Different features in isotopes
Different neutrons, different mass numbers
Relative atomic mass
Relative atomic mass
Average mass of all isotopes of an element