Periodic Table Vocabulary

Front

What is the periodic table?

Back

A chart of chemical elements

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Matter

Back

A substance that has mass and occupies space.

Front

An element is a substance that cannot be broken down into simpler substances.

Back

A substance that cannot be broken down into simpler substances

Front

Synthetic element

Back

An element that has been artificially created.

Front

Atom

Back

It is the smallest unit of matter that retains the chemical properties of an element.

Front

Molecule

Back

A group of atoms chemically bonded together

Front

Elemental symbol

Back

A one or two letter abbreviation used to represent an element in the periodic table.

Front

Atomic mass

Back

The mass of an atom in atomic mass units, approximately equal to the sum of the masses of its protons and neutrons.

Front

Atomic number is defined as the number of protons present in the nucleus of an atom.

Back

The number of protons present in the nucleus of an atom

Front

What is a period in the periodic table?

Back

A horizontal row