Properties and Classification of Elements

Front

What is the most abundant element in the earth's crust?

Back

Oxygen

Front

Which family is named after the element that makes up 78% of the atmosphere?

Back

Nitrogen family

Front

What are the properties of nonmetals?

Back

Brittle and dull.

Front

What is the name of Group 7A in the periodic table?

Back

Halogen Family

Front

Who developed the periodic table in 1869?

Back

Mendeleev

Front

What is the primary characteristic of metals?

Back

They are typically shiny and good conductors of heat and electricity.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their properties and atomic structure.

Front

What is the main characteristic of noble gases?

Back

They are inert and do not readily react with other elements.

Front

What is the definition of an element?

Back

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