Periodic Table #1

In the modern periodic table elements are arranged by:

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

The atomic number tells you what?

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

The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

Dimitri found that there was a pattern of properties that repeated every ____ elements.

• 2
• 4
• 5
• 7

A vertical column is called...

• group
• tower
• period
• crew

Which of the following is the most metallic element in period 3?

• Boron (B)
• Sodium (Na)
• Argon (Ar)
• Silicon (Si)

Which of these element is the least metallic?

• Potassium (K)
• Carbon (C)
• Sulfur (S)
• Neon (Ne)

The months of the year are __________ because they repeat in the same order every 12 months.

• periodic
• group
• period
• halogens