Subatomic Particles and Neutral Atoms

Flashcards covering the properties of protons, neutrons, and electrons, including their charges, locations, masses, and their role in neutral atoms.

What is the charge, location, and mass of a proton?

A proton has a charge of $+1$, is located in the nucleus, and has a mass of $1\,\text{amu}$.

What is the charge, location, and mass of a neutron?

A neutron has a charge of $0$, is located in the nucleus, and has a mass of $1\,\text{amu}$.

What is the charge, location, and mass of an electron?

An electron has a charge of $-1$, is located outside the nucleus, and has a mass of $0.00055\,\text{amu}$.

Which subatomic particles are found in the nucleus of an atom?

Protons and neutrons ($\text{Nucleus} = \text{protons} + \text{neutrons}$).

Where are electrons located in an atom?

Outside the nucleus.

What defines a neutral atom?

A neutral atom has an equal number of protons and electrons, causing the positive ($+\text{ charge}$) and negative ($-\text{ charge}$) to cancel out.