ALKANES BASICS
What are alkanes?
These hydrocarbons have only single bonds.
What are alkenes?
Hydrocarbons with at least one double bond.
What is polymerization?
Process of joining small molecules into large chains.
What is hydrogenation?
Reaction of alkene with hydrogen.
What is plastic bags?
Common use of polyethene.
General formula of alkanes.
CₙH₂ₙ₊₂
General formula of alkenes.
CₙH₂ₙ
What are monomers?
Small molecules that join together.
What is nickel (Ni)?
Catalyst used in hydrogenation.
What are fuels?
Alkanes are commonly used as this.
What is methane?
CH₄.
What is ethene?
C₂H₄
What is polyethene (polyethylene)?
Polymer formed from ethene.
What is 1,2-dibromoethane?
Product when ethene reacts with bromine.
Why polymers are useful.
they are strong, durable, and lightweight
What is substitution?
Type of reaction alkanes usually undergo.
Type of reaction alkenes usually undergo.?
Addition
What is addition polymerization?
Type of polymerization in alkenes.
Why alkenes are more reactive than alkanes.
presence of a double bond
What is non-biodegradability?
Environmental issue with polymers.
Why alkanes are less reactive?
because they have only strong single (sigma) bonds
Test used to identify alkenes?
bromine water test
Bond that breaks during polymerization.
double bond (π bond)
What is free radical substitution?
Reaction of alkanes with chlorine in sunlight.
What is recycling / reusing plastics?
Name one way to reduce plastic pollution.