Chapter 5 Atoms and Bonding

A (n) _______ is an atom or group of atoms that has an electric charge

• Compound
• Ion
• Crystal
• Neutron

A covalent bond is called _______ if the atoms equally share one or more pairs of electrons.

• Double
• Ionic
• Nonpolar
• Polar

An attraction between a positive metal ion and the electrons surrounding it is a(n) _______.

• Covalent bond
• Metallic bond
• Nonpolar bond
• Triple bond

Which of the following does NOT apply to valence electrons?

• Loosely held by the nucleus
• Shown on electron dot diagrams
• Transferred or shared in bonding
• Make up most of the atom’s mass

The number of ______ remains the same from top to bottom in a group in the periodic table

• Protons
• Valence electrons
• Electrons
• Neutrons

Elements in Group 17, the halogen family, are very reactive because their atoms have ____ valence electrons.

• Zero
• One
• Seven
• Eight

A molecule in which the polar covalent bonds do not cancel out will be

• Nonpolar.
• Polar.
• Ionic.
• Metallic

Which of the following is NOT a characteristic that results from metallic bonding?

• Hard, brittle crystals
• Electrical conductivity
• Ability to be hammered into sheets
• Luster

____________ ions are composed of more than one atom.

• Covalent
• Molecular
• Polar
• Polyatomic

In a double bond, ______ electrons are shared.

• 2
• 4
• 6
• 8