Grade 9 Chemistry Quiz: Hydrocarbons

What is the general formula for alkanes?

• CnH2n

• CnHn+2

• CnH2n+2

• CnH2n-2

Name the simplest alkane.

• Methane

• Ethanol

• Propane

• Butane

What is the general formula for alkenes?

• CnH2n

• CnHn-2

• CnH2n+2

• CnHn

What is the difference between alkanes and alkenes?

• Alkanes have double bonds, while alkenes have single bonds.

• Alkanes have single bonds, while alkenes have at least one double bond.

• Alkanes have a higher carbon content than alkenes.

• Alkanes are unsaturated hydrocarbons, while alkenes are saturated hydrocarbons.

What is the hardest substance known to man?

• Graphite

• Diamond

• Buckminsterfullerenes

• Sand

What type of structure is diamond?

• Giant Covalent

• Ionic

• Metallic

• Simple Covalent

What giant covalent structure can conduct electricity

• Diamond

• Silicon Dioxide

• Graphite

• C60