Periodic table

In the modern periodic table elements are arranged by:

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

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NGSS.HS-PS1-1

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Each column in the periodic table is called a 

• period
• group
• cluster
• unit

An element's identity is determined by the number of

• electrons.
• protons.
• neutrons.
• valence.

Elements in the same ________ are more chemically similar.

• group
• period
• club
• table

The majority of elements on the periodic table are

• man made.
• nonmetals.
• metals.
• gases.

What period and group is Silver (Ag)? 

• Period 2, Group 1
• Period 3, Group 16
• Period 5, Group 11
• Period 2, 14

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

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

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

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Which element is not a metal?

• H

• Re

• Al

• Ba

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

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