Atomic Structure Flashcard

Front

What is the atomic number of an atom?

Back

The atomic number is the number of protons in an atom.

Front

Which particles are found in the nucleus of an atom?

Back

Protons and neutrons are found in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

Where are electrons located in an atom?

Back

Electrons are located in the electron cloud surrounding the nucleus.

Front

What is the formula to calculate the number of neutrons in an atom?

Back

Neutrons = Mass Number - Atomic Number.

Front

How many neutrons does an atom of Carbon (mass number = 12, atomic number = 6) have?

Back

6 neutrons.

Front

What is an isotope?

Back

Isotopes are atoms of the same element with different numbers of neutrons.