Module 16: L2 ck - Atomic Mass

Front

What are isotopes?

Back

Isotopes are atoms of the same element that have different numbers of neutrons.

Front

How do isotopes of an element compare?

Back

They have different numbers of neutrons.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom of that element.

Front

What is the mass number of an element?

Back

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

Front

What is the atomic mass of an element?

Back

The atomic mass is the average mass of the atoms of that element.

Front

What is the mass of an electron compared to protons and neutrons?

Back

The mass of an electron is negligible.

Front

What defines the identity of an element?

Back

The identity of an element is defined by the number of protons in its nucleus.

Front

What is the relationship between protons and atomic number?

Back

The atomic number is equal to the number of protons in the nucleus.

Front

What are the components of an atom?

Back

An atom consists of protons, neutrons, and electrons.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom, with no electric charge.