Atoms and the Periodic Table

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What is the nucleus of an atom?

Back

The central part of an atom that contains protons and neutrons.

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 a compound?

Back

A substance formed when two or more different elements are chemically bonded together.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number and grouped by similar properties.

Front

What are metals?

Back

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

Front

What are nonmetals?

Back

Elements that are usually 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.