HS-PS1-1 Periodic Table Review

Front

Nucleus

Back

Small, positively charged center of an atom.

Front

How does the modern periodic table arrange elements?

Back

By atomic number.

Front

Mass

Back

Amount of matter in an object.

Front

Group (in the periodic table)

Back

A vertical column of elements on the periodic table.

Front

Period (in the periodic table)

Back

A horizontal row of elements on the periodic table.

Front

Atomic Number

Back

The number of protons in an atom's nucleus.

Front

Isotope

Back

Atoms of the same element with different numbers of neutrons.

Front

Electron Configuration

Back

The distribution of electrons in an atom's energy levels.

Front

Valence Electrons

Back

Electrons in the outermost energy level of an atom.

Front

Chemical Symbol

Back

A one or two-letter representation of an element.