Chapter 6.7 Test - The Periodic Table

Mendeleev created the first periodic table by arranging elements in order of

• decreasing atomic mass.

• increasing atomic mass.

• increasing atomic number.

• increasing melting points and densities.

How did chemists change Mendeleev’s periodic table in the early 1900s?

• They included chemical properties such as bonding power.

• They included physical properties such as melting point and density.

• They used atomic mass instead of atomic number to organize the elements.

• They used atomic number instead of atomic mass to organize the elements.

Most metals are NOT

• ductile.

• good conductors of heat and electricity.

• liquid at room temperature.

• malleable.

In the periodic table, the most reactive metals are found

• in Group 1, the first column on the left.

• in Period 1, the first row across the top.

• in Groups 13 through 16 in the center.

• in Periods 6 and 7 at the bottom.

Which group contains the most elements?

• metalloids

• nonmetals

• metals

• transition elements

A material is said to be ductile if it

• can be pulled out, or drawn, into a long wire.

• can be hammered or rolled into flat sheets and other shapes.

• can transfer heat or electricity to another material.

• is a mixture of a metal with at least one other element.

The elements in a column of the periodic table

• have similar properties.

• are in the same period.

• have the same atomic mass.

• have very similar chemical symbols.

What information in the periodic table indicates the number of protons in an atom?

• the position of the element in its column

• the element’s chemical symbol

• the element’s atomic number

• the element’s atomic mass

Which of the following statements about transition metals is true?

• They are never found uncombined in nature.

• They include familiar metals such as gold, silver, copper, and nickel.

• They are so soft that they can be cut with an ordinary knife.

• They are the most reactive of all the types of metals.

Which group of elements shares characteristics with both metals and nonmetals?

• salts

• metalloids

• halogens

• lanthanides