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YR 1
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Total cards: 5•Content version: v4•Public deck•Updated: 8/1/2026
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#1
Front (Question)
Atom
Back (Answer)
the smallest unit of an element -> consist of electrons organized in orbitals/shells and a nucleus made from protons and neutrons Subatomic Particle Relative mass Charge Proton 1 +1 Neutron 1 0 Electron 1/2000 -1
#2
Front (Question)
Element:
Back (Answer)
same kind of atoms (same atomic number)
#3
Front (Question)
Isotopes:
Back (Answer)
atoms with same number of protons but different number of neutrons (same element: same atomic number but different mass number)
#4
Front (Question)
Relative Atomic mass Ar
Back (Answer)
Is the average (weighted) mass of an element’s isotopes relative to 1/12 the mass of a 12C atom [no unit]
#5
Front (Question)
Back (Answer)