Periodic Table and Chemical Properties

Flashcards created for reviewing key concepts related to the periodic table and chemical properties.

Chemical Property

Any characteristic of a substance that indicates whether it can undergo a chemical change.

Chemical Change

A change that results in the formation of new chemical substances.

Dmitri Mendeleev

A Russian chemist who developed the periodic table by arranging elements by atomic mass.

Periodic Table

A tabular arrangement of chemical elements, organized by increasing atomic number.

Atomic Mass

The weighted average mass of the atoms in a naturally occurring element.

Groups

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

Periods

Horizontal rows in the periodic table, indicating levels of energy shells.

Similar Physical Properties

Characteristics that elements within the same group in the periodic table share.

Modern Periodic Table

The current version of the periodic table, organized by increasing atomic number rather than atomic mass.

Arrangement of Elements

The organization of elements based on their atomic structure and properties.

Late 1800s

The time period when Mendeleev presented his periodic table.

Increasing Atomic Mass

The method used by Mendeleev to initially arrange the elements in his periodic table.

Elements

Pure substances that consist entirely of one type of atom.

Chemical Characteristics

Properties that define how substances interact chemically with one another.

Atomic Numbers

The number of protons in the nucleus of an atom, determining its identity as a specific element.

Mendeleev's Table

The early version of the periodic table that laid the foundation for the modern arrangement of elements.