AQA GCSE CHEMISTRY 8462 LATEST WITH
ACTUAL QUESTIONS AND CORRECT
◉Where is crude oil found? Answer: In the porous rocks in the Earth's
crust
◉Is crude oil renewable or non-renewable? Answer: Non-renewable
◉What is crude oil made up of? Answer: Hydrocarbons
◉What gives hydrocarbon molecules varying properties? Answer: They
vary in size
◉What happens to the properties of hydrocarbons as the molecules get
larger? Answer: It gets more viscous, its boiling point gets higher, the
less volatile it is, the less easily it ignites
◉How are the components of crude oil separated? Answer: Fractional
distillation
, ◉Why does fractional distillation work? Answer: Different sized
molecules of hydrocarbons have different boiling points
◉What piece of equipment does fractional distillation take place in?
Answer: Fractionating column
◉What are the stages of fractional distillation? Answer: 1) the crude oil
is heated until it evaporates 2) the molecules move up the fractionating
column which is hotter at the bottom 3) larger molecules condense at the
hotter bottom of the column and are collected 4) the shorter molecules
condense at the cooler top of the column and are collected
◉What is an alkane? Answer: A hydrocarbon in which each carbon
molecule makes 4 single bonds with other molecules
◉Are alkanes saturated or unsaturated? Answer: Saturated
◉What is the general formula for an alkane? Answer: CnH2n+2
◉What is the name of an hydrocarbon with 1 carbon molecule?
Answer: Meth(ane/ene)
ACTUAL QUESTIONS AND CORRECT
◉Where is crude oil found? Answer: In the porous rocks in the Earth's
crust
◉Is crude oil renewable or non-renewable? Answer: Non-renewable
◉What is crude oil made up of? Answer: Hydrocarbons
◉What gives hydrocarbon molecules varying properties? Answer: They
vary in size
◉What happens to the properties of hydrocarbons as the molecules get
larger? Answer: It gets more viscous, its boiling point gets higher, the
less volatile it is, the less easily it ignites
◉How are the components of crude oil separated? Answer: Fractional
distillation
, ◉Why does fractional distillation work? Answer: Different sized
molecules of hydrocarbons have different boiling points
◉What piece of equipment does fractional distillation take place in?
Answer: Fractionating column
◉What are the stages of fractional distillation? Answer: 1) the crude oil
is heated until it evaporates 2) the molecules move up the fractionating
column which is hotter at the bottom 3) larger molecules condense at the
hotter bottom of the column and are collected 4) the shorter molecules
condense at the cooler top of the column and are collected
◉What is an alkane? Answer: A hydrocarbon in which each carbon
molecule makes 4 single bonds with other molecules
◉Are alkanes saturated or unsaturated? Answer: Saturated
◉What is the general formula for an alkane? Answer: CnH2n+2
◉What is the name of an hydrocarbon with 1 carbon molecule?
Answer: Meth(ane/ene)
