Atomic Structures, Atomic Theories, Isotopes and Ions

Front

What is the atomic number of an atom?

Back

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

Front

What defines an element?

Back

An element is a pure substance that cannot be broken down into simpler substances and is made of only one type of atom.

Front

What is an atom?

Back

The smallest particle of an element that retains all the properties of that element.

Front

How are electrons arranged in an atom?

Back

Electrons are arranged in energy levels or shells around the nucleus.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

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.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom that has no charge.

Front

What is the difference between an ion and an atom?

Back

An ion is an atom that has gained or lost one or more electrons, resulting in a net charge.