The Periodic Table, Revision

Which of the following elements is an alkali metal?

• calcium

• magnesium

• mercury

• sodium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Each column of the periodic table is

• an element.

• a group.

• an isotope.

• a period.

The three main groups of elements are metals, nonmetals, and

• inert gases.

• alkali metals.

• radioactive isotopes.

• semiconductors/metalloids.

Most elements are

• metals.

• nonmetals.

• metalloids.

• semiconductors.

The order of elements in the modern periodic table is based on an element's

• atomic number.

• name.

• chemical symbol.

• atomic mass.

Metals tend to be

• gases.

• dull.

• brittle.

• good conductors.

What determines the order of elements on today's periodic table?

• increasing atomic mass

• decreasing atomic mass

• increasing atomic number

• decreasing atomic number

From this element key of Nitrogen, determine the atomic number of nitrogen

• 7

• 7.01

• 14.01

• 21.01

Which is NOT a property of metals?

• brittleness

• conductivity

• ductility

• luster

Where are most metals on the periodic table?

• on the left side only

• on the right side only

• in the middle only

• on the left side and in the middle