Unit 2 - The Atom (msp)

The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.

A subatomic particle found in the nucleus of an atom, with a positive electric charge.

A subatomic particle with a negative electric charge, found in the electron cloud surrounding the nucleus.

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

Electrons in the outer shell of an atom that are involved in forming bonds.

Elementary particles and a fundamental constituent of matter, which combine to form protons and neutrons.

The number of protons in the nucleus of an atom, determining the element's identity.

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

Vertical columns in the periodic table, which contain elements with similar chemical properties.

Horizontal rows in the periodic table, where elements have the same number of electron shells.