Reading PTE.

It is a pure substance made up of only one type of atom.

• Atoms

• Elements

• Proton

• Neutron

Mendeleev arranged the elements by their ______________.

• Element name

• symbol

• Atomic number

• Atomic mass

Each vertical column on the periodic table is called a...

• group

• period

• crew

• tower

 

The horizontal rows on the periodic table are called

• group

• periods

• element

• atom

In each square of the periodic table, the number at the bottom is the:

• element name

• Atomic mass

• Atomic number

• symbol

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

• Atomic number

• Element name

• Atomic mass

• Symbol

On the periodic table, elements on the right side of the "stair-step" line are classified as:

• Non-metals

• metals

• gases

• halogens

These elements located on the "stair-step" line are sometimes called "semiconductors."

• Non-metals

• Metals

• Metalloids

• Halogens

Most of the elements on the periodic table are classified as _____.

• Metals

• Non-metals

• groups

• Metalloids

In the modern periodic table elements are arranged by:

• Atomic mass

• Atomic number

• valence electrons

• number of isotopes