Chemical Bonding Unit Review

In drawing a Lewis structure, each nonmetal atom except hydrogen should be surrounded by

• 2 electrons
• 4 electrons
• 8 electrons
• 10 electrons

The properties of both ionic and molecular compounds are related to the

• lattice energies of the compounds.
• strengths of attraction between the particles in the compounds.
• number of covalent bonds each contains.
• mobile electrons that they contain.

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In metals, the valence electrons

• are attached to particular positive ions.
• are shared by all of the atoms.
• are immobile.
• form covalent bonds.

In metallic bonds, the mobile electrons surrounding the positive ions are called a(n)

• Lewis structure.
• electron sea.
• electron cloud.
• dipole.

Malleability and ductility are characteristic of substances with

• covalent bonds.
• ionic bonds.
• Lewis structures.
• metallic bonds.

A polar molecule contains

• ions.
• a region of positive charge and a region of negative charge.
• only London forces.
• no bonds.

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A chemical formula includes the symbols of the elements in the compound and subscripts that indicate

• atomic mass of each element.
• number of atoms or ions of each element that are combined in the compound.
• formula mass.
• charges on the elements or ions.

If two covalently bonded atoms are identical, the bond is

• nonpolar covalent.
• polar covalent.
• dipole covalent.
• coordinate covalent.

Tags

NGSS.HS-PS1-1

When atoms share electrons, the electrical attraction of an atom for the shared electrons is called the atom's

• electron affinity.
• electronegativity.
• resonance.
• hybridization.

Tags

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Which of the following shows the types and numbers of atoms joined in a single molecule of a molecular compound?

• molecular formula
• potential energy diagram
• covalent bond
• ionic bond