Periodic Table

Elements in the same group or family have the same number of

• neutrons

• valence electrons

• electrons

• energy levels

Elements in the same period have the same number of

• neutrons

• valence electrons

• electrons

• energy levels

Tags

NGSS.HS-PS1-1

What do atoms of the same periodic group have in common?

• They have the same atomic number.

• They have the same chemical symbols.

• The have similar chemical properties.

• They have the same atomic mass.

The positively charged particle in the nucleus of an atom is a:

• Proton

• Neutron

• Electron

• Shell

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

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