Flashcard Atomic Structure

Front

What does the atomic number of an element represent?

Back

The number of protons in the nucleus.

Front

What is the purpose of calculating the weighted average atomic mass?

Back

To represent the average mass of an element's isotopes as found in nature.

Front

What is the atomic number of an element with 17 protons?

Back

17.

Front

What is the weighted average atomic mass of an element?

Back

The average mass of the element's isotopes, weighted by their natural abundance.

Front

What are isotopes of an element?

Back

Atoms with the same number of protons but different numbers of neutrons.

Front

Define an atom.

Back

The smallest unit of an element, consisting of protons, neutrons, and electrons.

Front

What is a proton?

Back

A positively charged particle found in the nucleus of an atom.

Front

What is a neutron?

Back

A neutral particle found in the nucleus of an atom.

Front

What is an electron?

Back

A negatively charged particle that orbits the nucleus of an atom.

Front

How do you calculate the atomic mass of an element?

Back

By taking the weighted average of the masses of its isotopes.