the periodic table

The order of elements in the periodic table is based on

• the number of protons in the nucleus.

• the electric charge of the nucleus.

• the number of neutrons in the nucleus.

• atomic mass.

In Mendeleev's periodic table, elements in each column had similar

• atomic masses.

• properties.

• atomic numbers.

• symbols.

How was Mendeleev's periodic table arranged?

• by increasing atomic mass

• by decreasing atomic mass

• by increasing atomic number

• by decreasing atomic number

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.

Elements in an elemental family have similar

• atomic symbols.

• atomic sizes.

• atomic weights.

• chemical properties.

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

The blue atoms are called 

• metals
• nonmetals
• metalloids
• noble gases

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent