Atomic Structure

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons, resulting in different mass numbers.

Front

How do you calculate the number of neutrons in an atom?

Back

Number of Neutrons = Mass Number - Atomic Number.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number of an atom?

Back

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

Front

What happens to an atom when it becomes an ion?

Back

An atom becomes an ion when it gains or loses electrons, resulting in a net charge.

Front

What is the hyphen notation for an isotope?

Back

Hyphen notation is a way to denote isotopes by writing the element name followed by a hyphen and the mass number (e.g., carbon-12).

Front

Which subatomic particle is used to identify an element?

Back

The number of protons in the nucleus of an atom is used to identify the element.

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.