The Periodic Table

This makes up almost 80% of the air we breathe.

What is the number at the top of a square of an element?

Which of the following tells the physical state of an element at room temperature?

The number beneath the chemical symbol indicates the

Mendeleev arranged the elements by

This is needed for substances to burn.

What is necessary for substances to burn?

Diamonds and soot are forms of this.

Light bulbs last longer when they are filled with this gas.

Which element group only contains gases?

What is the chemical symbol for iron?

The vertical column of elements on the periodic table is called a(an)

The elements' properties follow a pattern that repeats every

What is the chemical symbol for copper?

Transititon metals are

Chlorine and iodine are examples of these.

Most of the elements in the periodic table are

The horizontal row on the periodic table is called a(n)

These metals react in a violent way with water to form hydrogen.

Which is NOT a way to classify elements on the periodic table?

This is a colorless, odorless gas with only 1 valence electron.

This metal, part of the boron group, is used for aircraft parts.

Cement and chalk are compounds of this.