The Periodic Table

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

The blue atoms are called 

• metals
• nonmetals
• metalloids
• noble gases

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Which element is a metalloid?

• H

• Re

• Ne

• B

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

Elements in a ..................have similar chemical properties.  

• period
• group
• row