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C1.6 - Structure Of The Atom

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Total cards: 8•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (8)

#1
Front (Question)

Subatomic particles

Back (Answer)

• protons • electrons • neutrons

#2
Front (Question)

Proton

Back (Answer)

• positive charge + • located in the nucleus • relative mass of 1

#3
Front (Question)

Neutron

Back (Answer)

• no charge • located in the nucleus • relative mass of 1

#4
Front (Question)

Electron

Back (Answer)

• negative charge • located in shells that orbit the nucleus • relative mass of 0 • too small to contribute to the mass of the atom

#5
Front (Question)

Atom neutral charge

Back (Answer)

• has equal number of protons and electrons • so they cancel • neutrons have no charge

#6
Front (Question)

Atomic number

Back (Answer)

-refers to the number of protons -all atoms of a particular element have the same number of protons E.g hydrogen atoms all have the 1 proton -this is also equal to the number of electrons

#7
Front (Question)

Atomic mass number

Back (Answer)

• combination of proton number and neutron mass - eg Be has 4 protons and 5 neutrons = mass number 9

#8
Front (Question)

Number of neutrons formula

Back (Answer)

Mass number - atomic number