Practice Test #3 Chemical Bonding

The formula of sodium chloride, NaCl, communicates to us that........

• The ratio of Sodium ions to Chlorine ions, in a single molecule, of NaCl is 1:1

• Lattices of Sodium Chloride contain 1 Sodium to 1 Chloride

• C. Compounds of Sodium Chloride contain 1 Sodium atom per every 1 Chlorine atom

• All of the above

What is the correct formula for Magnesium Nitrate?

• MgNO

• MgNO₃

• Mg(NO₃)₂

• Mg₂NO₃

Which statement best explains why atoms form chemical bonds with other atoms?

• Most atoms are less stable when they combine with other atoms.

• When atoms collide with other atoms, they bond automatically.

• Atoms are always attracted to other atoms

• Most atoms are unstable unless they are combined with other atoms.

When an atom gains or loses electrons, and takes on an electrical charge. What do we call it to communicate that it has an electrical charge?

• an ion

• a free radical

• a hydrate

• a monoatomic molecule

What is formed between atoms when electrons are shared or transferred between atoms.

• mixtures

• bonds

• alloys

• solutions

Is this compound ionic or covalent: LiF

• Ionic

• Covalent

Is this compound ionic or covalent NO₃

• Ionic

• Covalent

What is the correct chemical formula for this compound: Sodium Oxide

• NaO

• Na₂O

• NaO₂

• SO

What is the correct chemical formula for a covalent molecule of Chlorine and Phosphorus.

• Cl₃P

• Phosphorus Triachloride

• Trichlorine Monophosphide

• PCl₃

What is the correct chemical formula for this compound: Potassium Nitrate

• P₃N

• K₃N

• KNO₂

• KNO₃