Hydrocarbons and Alkanes
1. Complete the passage using the words below (words cannot be used more
than once but not all words are needed):
poly(ethene)
finite
hydrocarbon
thousands
distillation
natural gas
infinite
chromatography
fossil
petrol
petrochemicals
methane
simple
non-renewable
renewable
used
millions
fractional
replaced
diesel
Crude oil and ..................................... are types of ................................. fuel. Both
contain a mixture of .………….…………….… compounds, although natural gas is mainly
made of ....................... Because crude oil is a mixture of fluids it can be separated
using the process of ............................. ...............................
Crude oil is currently one of the most important resources in the world. Many of
the fractions obtained from crude oil are important fuels such as ..................... and
.......................... However, crude oil also provides raw materials for making
polymers such as ........................................... Products that are made from crude oil
are often referred to as ........................................
Fossil fuels are formed over ................................... of years and they are not being
............................. at the rate they are being .............................., so they will run out
eventually. Because our supply of fossil fuels is ............................... we describe
them as being ..................................... resources.
(15)
2. What is a hydrocarbon?
…………………………………………………………………………….................................................................
.......................................................................................................................................... (2)
Hydrocarbons and Alkanes
3. The following hydrocarbons are part of a homologous series called the Alkanes.
They all burn with oxygen, producing carbon dioxide and water, and releasing
lots of heat as they do so. Draw the displayed formula for each compound.
Methane (CH4)
Ethane (C2H6)
Propane (C3H8)
Butane (C4H10)
(4)