The Periodic Table Introduction

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

The blue elements are called 

• metals
• nonmetals
• metalloids
• noble gases

The word "periodic" in periodic table refers to...

• a regular, repeating pattern
• organization of elements
• columns of elements
• increasing numbers of protons

Each column in the periodic table is called a ...

• period
• group
• cluster
• unit

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

How did Dmitri predict elements?

• Time traveled

• Predicted the properties by the atomic numbers left

• Guess and checked

• Calculated the atomic mass and properties

How are the elements arranged on the periodic table today?

• By atomic mass

• By number of electrons

• By atomic number

• By alphabetic order

The Modern Periodic Table of Elements is arranged by

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

Who predicted new elements for the gaps in the periodic table?

• Henry Moseley

• Lothar Meyer

• Dmitri Mendeleev

• Antione Laviosier

Who proposed the Law of Octaves?

• Lothar Meyer

• Henry Moseley

• John Newlands

• Dmitri Mendeleev