Quiz 3 Flashcards
Describe what occurs during cracking
A long hydrocarbon is broken down into smaller hydrocarbons
Give a use of alkenes
As a starting material to make more useful chemicals like polymers
Compare the reactivity of alkanes and alkenes
Alkenes are more reactive than alkanes
Give 3 examples of materials produced by the petrochemical industry from the products of fractional distillation
Solvents
Polymers
Lubricants
Detergents
State the general formula for alkanes
CnH2n+2
State the test and result for alkenes
Test: add bromine water
Result: colour changes from orange to colourless
State the products of combustion
Carbon dioxide + water
Describe the relationship between molecular size of an alkane and its boiling point
The greater the molecular size of an alkane, the higher its boiling point
Describe finite resource
A resource that will run out
Explain why cracking is important
Because there is a higher demand for fuels with small molecules
Other than fuels, give a use for the products of fractional distillation
Chemical feedstock for the petrochemical industry
Define combustion
The reaction of a fuel with oxygen
Explain why crude oil is considered a finite resource
Because it takes longer to form than the rate at which it is being used up
Stat the conditions required for steam cracking
High temperature and steam
State the major use of fuels
Combustion reactions
