Module 16: L3 ck - Periodic Table

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, where elements with similar properties are grouped together.

Front

What are groups in the periodic table?

Back

Vertical columns in the periodic table where elements have similar chemical properties and the same number of valence electrons.

Front

What are periods in the periodic table?

Back

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

Front

What is atomic number?

Back

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

Front

What is atomic mass?

Back

The weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is a metal?

Back

Elements that are typically shiny, good conductors of heat and electricity, and malleable.

Front

What is a nonmetal?

Back

Elements that are generally poor conductors of heat and electricity, and can be gases, liquids, or brittle solids.

Front

What is a metalloid?

Back

Elements that have properties of both metals and nonmetals, often used as semiconductors.

Front

What is the significance of valence electrons?

Back

Valence electrons determine an element's chemical properties and its ability to bond with other elements.

Front

What is an electron dot diagram?

Back

A representation of the valence electrons of an atom, shown as dots around the element's symbol.