Obtaining fossil fuels Flashcards
Fossil fuels were formed ——– of years ago ?
Millions
Name all the missing fossil fuel ?
Crude oil
Natural gas
—-
Coal
Coal is formed over a long period of time from the remains of ——- that were pressed together under layers of rock ?
Animals
It is usually found —- underground, trapped between layers of rock seep through (impermeable rock) ?
Deep
——- — is often trapped in pockets above the crude oil
Natural gas
A limited resource like fossil fuels is called ——
Finite
Fossil fuels contain many useful chemicals, and we need to ——– these chemicals so that they are not wasted.
Seperate
Coal is often converted into —-.
Coke
When coke is burned as a fuel some ——— are not wasted.
Chemicals
Chemicals in crude oil are deprecated using ———- ————.
Fractional distillation
Paraffin is used for ——
Planes
Paraffin is another name for ——–
Kerosene
The oil that comes from the top of the fractional column because they have a lower ———
Viscosity
The bottom of the furnace has a —— viscosity
Higher
The crude oil is separated due to there ——- —–
Boiling point
Fossil fuels are a mixture of ———– molecules
Hydrocarbon
The molecules in a hydro carbon are ———- bonded
Chemically
The weak bonds have to be —— if the hydrocarbon is to boil
Broken
The smaller hydrocarbon molecules are more readily form a vapour this is called more ——–
Volatile
Hydrocarbon + oxygen ~ carbon dioxide + —–
Water
The chemical symbol for oxygen
0
Chemical symbol for hydrogeon
H
—- layered over the dead animals under the sea
Rock
Rock layers are ———– rocks
Sedimentary
