Periodic Table

Each column in the periodic table is called a 

• period

• group

• cluster

• unit

The atoms along the staircase are called 

• metals

• nonmetals

• metalloids

• noble gases

How did Mendeleev arrange the elements?

• alphabetical 

• density

• melting point

• atomic mass

The horizontal row on the periodic table is called a

• group

• family

• period

• atomic number

What does the 1.00794 stand for?

• Hydrogen

• atomic number

• atomic mass

• atomic explosion

Tags

NGSS.MS-PS1-1

Elements which are shiny, conduct electricity and heat are called

• metal

• nonmetal

• metalloid

• nonexistent

What's a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number

• electrons in the first level

Tags

NGSS.MS-PS1-1

one or two letters that represent the name of an element

• element name

• element symbol

• atomic number

• atomic mass

This class of elements are sometimes called "semiconductors."

• Metals

• Nonmetals

• Metalloids

• Groups

Tags

NGSS.MS-PS1-1

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers