Elements and the Periodic Table

Front

What are the horizontal rows in the periodic table called?

Back

Periods.

Front

What state of matter are more than half of the nonmetals at room temperature?

Back

Gases.

Front

What property do elements that easily transmit electricity and heat display?

Back

Conductivity.

Front

Which group of elements does not ordinarily form compounds?

Back

Noble gases.

Front

What are atoms with the same number of protons but different numbers of neutrons called?

Back

Isotopes.

Front

What is the term for elements that are good conductors of heat and electricity?

Back

Metals.

Front

What is the main characteristic of nonmetals?

Back

They are poor conductors of heat and electricity.

Front

What is the term for the vertical columns in the periodic table?

Back

Groups.

Front

Which group of elements is known for having a full valence shell?

Back

Noble gases.

Front

What is the significance of the atomic number of an element?

Back

It represents the number of protons in the nucleus of an atom.