Periodic Table

Front

What is a valence electron?

Back

Electrons in the outermost energy level of an atom.

Front

What do we call elements that are shiny and conduct electricity and heat?

Back

Metal.

Front

Which element is represented by the symbol 'Na'?

Back

Sodium.

Front

What do the groups in the periodic table indicate?

Back

The number of valence electrons in the elements.

Front

How many neutrons are in a Gold atom?

Back

118.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What are nonmetals?

Back

Elements that are usually dull, poor conductors of heat and electricity.

Front

What is a metalloid?

Back

An element that has properties of both metals and nonmetals.

Front

What is the periodic table?

Back

A chart that organizes all known elements by their atomic number and properties.

Front

What is an element?

Back

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