Chemistry Review for Quest Unit 5

An ionic compound is formed when there is a reaction between the elements

• strontium and chlorine

• hydrogen and chlorine

• nitrogen and oxygen

• sulfur and oxygen

When lithium reacts with bromine to form the compound NaCl, each sodium atom

• gains one electron and becomes a negatively charged ion

• gains three electrons and becomes a negatively charged ion

• loses one electron and becomes a positively charged ion

• loses three electrons and becomes positively charged ion

The correct IUPAC name of the compound with the formula NaCl is

• Sodium chloride

• Sodium chlorine

• Sodium (I) Chlorine

• Sodium (I) Chloride

A sample of a substance has these characteristics:

· Melting point of 984 K

· Hard, brittle solid at room temperature

· Poor conductor of heat and electricity as a solid

· Good conductor of electricity as a liquid or in an aqueous solution

This sample is classified as

• a metallic element

• a radioactive element

• a molecular compound

• an ionic compound

What is the chemical formula of iron (III) sulfide?

• FeS

• FeSO₃

• Fe₂S₃

• Fe₂(SO₃)₃

Which element forms a compound with chlorine with the general formula MCl?

• Rb

• Re

• Ra

• Rn

An atom of argon in the ground state tends not to bond with an atom of a different element because the argon atom has

• more protons than neutrons

• more neutrons than protons

• a total of two valence electrons

• a total of eight valence electrons

If an element, X can form an oxide that has the formula X₂O₃, then element X, would most likely be located on the Periodic Table in the same group as

• Ba

• In

• Cd

• Na

Which substance has a chemical formula with the same ratio of metal ions to nonmetal ions as in Lithium Fluoride?

• Sodium oxide

• Sodium chloride

• Magnesium oxide

• Magnesium chloride

The compound XCl is classified as ionic if X represents the element

• H

• I

• Rb

• Br