Atomic Theory & Atomic Structure

Front

Subatomic particles with a negative charge

Back

Electrons are subatomic particles that carry a negative charge and are found in the electron cloud surrounding the nucleus of an atom.

Front

Where are electrons likely to be found as they travel around the nucleus?

Back

Electrons are likely to be found in the Electron Cloud, which is the region around the nucleus where electrons are most likely to be located.

Front

What is the arrangement of elements organized by atomic number?

Back

The Periodic Table is the arrangement of elements organized by their atomic number, which reflects the number of protons in the nucleus.

Front

Who discovered the neutron within the atom?

Back

James Chadwick discovered the neutron, a neutral subatomic particle found in the nucleus of an atom.

Front

What are atoms of the same element with a different number of neutrons called?

Back

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

Front

What is the center of an atom called?

Back

The nucleus is the center of an atom, containing protons and neutrons.

Front

What are positively charged subatomic particles called?

Back

Protons are positively charged subatomic particles found in the nucleus of an atom.

Front

What is the term for the region where electrons are found?

Back

The Electron Cloud is the region around the nucleus where electrons are likely to be found.

Front

What is the smallest unit of an element that retains its properties?

Back

An atom is the smallest unit of an element that retains the chemical properties of that element.

Front

What is the charge of neutrons?

Back

Neutrons have no charge; they are neutral subatomic particles found in the nucleus.