Chemical bonding

What kind of bond is formed when two atoms share electrons to form a molecule?

• ionic

• metallic

• electrocovalent

• covalent

Which type of bond is formed when electrons are transferred from one atom to another?

• covalent

• ionic

• hydrogen

• metallic

All covalent compounds

• contain ions.

• have high boiling points.

• are solids at room temperature.

• consist of nonmetallic elements.

Ionic bonds form between

• two metals.

• two nonmetals.

• any two elements.

• a metal and a nonmetal.

The metal atoms in stainless steel are held together by

• Ionic bonds

• Metallic bonds

• Covalent bonds

• Polar bonds

Which of the following are most directly involved in chemical bonding?

• protons

• neutrons

• alpha particles

• valence electrons

The high electrical conductivity of metals is primarily due to

• high ionization energy

• filled energy levels

• mobile electrons

• high electronegativities

Which is an example of a mixture?

• iron filings

• copper wire

• bronze pipe

• titanium plate

A characteristic of ionic solids is that they

• have high melting points

• have low boiling points

• conduct electricity

• are noncrystalline