CAIE A-Level Chemistry 1.1.2 Protons, Neutrons and Electrons

Practise comparing the relative charge and relative mass of the three subatomic particles.

Exam points

state relative charges as proton +1, neutron 0 and electron −1
state relative masses as proton 1, neutron 1 and electron about 1/1840
use charge and mass together to explain whether and how strongly a particle beam deflects

[Maximum number: 1]

Neutrons are passed through an electric field. The mass of one neutron relative to $\frac{1}{12}$ the mass of a ${ }^{12} \mathrm{C}$ atom and any deflection in the electric field is recorded.

Which row is correct?

mass of

neutron

behaviour of beam of

neutrons in an electric field

deflected

not deflected

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1.1.2—Protons, neutrons and electrons question 1