The Periodic Table

Front

What is the main purpose of the Periodic Table?

Back

To organize and classify all known chemical elements based on their properties and atomic structure.

Front

What are metals?

Back

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

Front

What are non-metals?

Back

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

Front

What is the atomic number?

Back

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

Front

What is the atomic mass?

Back

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

Front

How many groups are in the Periodic Table?

Back

There are 18 groups in the Periodic Table.

Front

What is a period in the context of the Periodic Table?

Back

A horizontal row in the Periodic Table, indicating the number of electron shells in the elements.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the significance of group 1 elements?

Back

They are known as alkali metals and are highly reactive, especially with water.