Hydrocarbons Flashcards
What are hydrocarbons?
Compounds made exclusively of hydrogen and carbon.
What is the general formula for alkanes?
CnH2n+2.
True or False: Alkenes are saturated hydrocarbons.
False.
What type of bond do alkenes contain?
At least one double bond.
Fill in the blank: The simplest alkene is _____.
Ethene.
Which of the following is an example of an alkane? A) Ethene B) Propane C) Butene
B) Propane.
What is the process of breaking down hydrocarbons called?
Cracking.
What is the main use of hydrocarbons?
As fuels and raw materials in the chemical industry.
What is the general formula for alkenes?
CnH2n.
True or False: Methane is a three-carbon alkane.
False.
What is the name of the hydrocarbon with the formula C4H10?
Butane.
What type of reaction do alkenes typically undergo?
Addition reactions.
Which hydrocarbon is used in the production of plastics?
Ethene.
Fill in the blank: The process of combustion of hydrocarbons produces _____.
Carbon dioxide and water.
What is the state of most alkanes at room temperature?
Gas or liquid.
What is the name of the longest chain alkane with 7 carbons?
Heptane.
True or False: Alkanes are more reactive than alkenes.
False.
What type of bond is present in alkynes?
Triple bond.
Which of the following hydrocarbons is unsaturated? A) Ethane B) Ethene C) Octane
B) Ethene.
What is the term for the structural formula representation of hydrocarbons?
Displayed formula.
Fill in the blank: The process of hydrogenation converts alkenes into _____ by adding hydrogen.
Alkanes.
What is the main environmental concern regarding the combustion of hydrocarbons?
Production of greenhouse gases.
What is the boiling point trend of alkanes as the number of carbon atoms increases?
Boiling point increases.
True or False: Cycloalkanes are a type of alkane that forms a ring structure.
True.
What is the formula for octane?
C8H18.
Which hydrocarbon is known as the primary component of natural gas?
Methane.
Fill in the blank: The process of fractional distillation is used to separate _____ based on their boiling points.
Hydrocarbons.
What are isomers?
Compounds with the same molecular formula but different structural formulas.
Which of the following is a property of hydrocarbons? A) High polarity B) Low density C) High solubility in water
B) Low density.
What is the main product of complete combustion of hydrocarbons?
Carbon dioxide.
True or False: Hydrocarbons can only be found in fossil fuels.
False.
What is the name of the reaction where alkenes react with bromine?
Halogenation.
