Atomic Structure and Periodic Table Concepts

Front

What determines the chemical properties of an element?

Back

The number of valence electrons.

Front

What are the columns in the periodic table called?

Back

A group or family.

Front

If an element has an atomic number of 11, how many protons does it have?

Back

11 protons.

Front

What two particles determine the mass of an atom?

Back

Protons and neutrons.

Front

Where are most nonmetals located on the periodic table?

Back

On the right side.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is a period in the periodic table?

Back

A horizontal row of elements.

Front

What are the main characteristics of metals?

Back

Good conductors of heat and electricity, malleable, and ductile.

Front

What are nonmetals?

Back

Elements that are poor conductors of heat and electricity.