BLAZING AWAY!!!!

Natural Gas (2.1)

• What is the chemical name for natural gas?

• What are the properties and formula of methane?

• What gas in the air is used up when methane burns?

• What 2 substances are formed when methane burns completely?

• How can you test for these 2 substances?

Combustion (2.1)

• What is combustion?• Why does a bunsen burn more

fiercely with the air-hole open?• Why is combustion said to be an

exothermic reacion?• What do the products of

combustion of methane prove about methane itself?

Alkanes (2.2)

• What are the names and uses of some common alkane mixtures?

• What is a hydrocarbon?• What 2 substances are formed

when a hydrocarbon burns completely?

• What are the differences between a molecular formula and a structural formula?

Alkanes (2.2)

• Can you draw the structural formula for the first 10 alkanes?

• What is the molecular formula for the first 10 alkanes?

• Can you name the first 10 alkanes?• What is the word equation for any

alkane burning in oxygen?

Homologous Series (2.2)

• What is the rule for working out the number of hydrogen atoms in an alkane molecule?

• What is a homologous series, and why are the alkanes an example of one?

• What is the general formula for the alkanes?

• Why are the products of combustion the same for every alkane?

Fossil Fuels (2.3)

• Can you explain how coal and oil were formed (where, what from, how long it took)?

• Why are coal, oil and gas referred to as fossil fuels?

• What is crude oil, and why does it have to be refined?

Fractional Distillation (2.3)

• How can distillation be used to separate the liquids in crude oil?

• What are fractions? • As the boiling point of a fraction

increases, what happens to the speed of evaporation, viscosity and flammability?

Fractional Distillation (2.3)

• How does the size of a molecule change as the boiling point of a fraction increases?

• What are some of the fractions distilled from crude oil and what are they are used for?

• What are the typical numbers of carbon atoms in each of the fractions?

Alkenes (2.4)

• How are alkenes similar to alkanes in their properties?

• Can you describe the chemical test for telling an alkane and an alkene apart?

• How are alkenes made from alkanes?

• What is the main type of substance made from alkenes?

Alkenes (2.4)

• Why are alkenes also hydrocarbons?

• What is meant by a double bond? • Can you name and draw the

structural formula of the first 10 alkenes?

• Can you work out the molecular formula of the first 10 alkenes?

Alkenes (2.4)

• What is the word equation for any alkene burning in oxygen?

• What is the functional group in an alkene?

• How can you work out the number of hydrogen atoms in an alkene molecule if you know the number of carbon atoms?

Alkenes (2.4)

• Why does methene not exist? • What is the general formula for

the alkenes? • Why do alkenes give the same

combustion products as alkanes?

Carbon (2.5)

• What are the symbol and properties of carbon?

• Where are natural diamonds formed?

• What are the properties of diamond?

• Can you name 3 different forms of carbon?

Carbon (2.5)

• Can you draw a diagram of the experiment you would use to prove the products of combustion of carbon or a hydrocarbon?

• What is the word and formula equation for carbon burning in air?

• What is carbon dioxide used for?

Carbon (2.5)

• What is the formula of carbon monoxide, and how is it formed?

• Why is carbon monoxide dangerous?

• What is formed when carbon monoxide burns in air?

Pollution (2.6)

• What are the main chemicals emitted from car exhausts? Which of these are considered to be pollutants?

• What can be done to reduce this pollution?

• What is a catalyst? • Which metals are used as catalysts

in catalytic converters?

Cracking (2.7/2.8)

• What does cracking mean in chemistry?

• Can you describe an experiment to demonstrate the cracking of an alkane?

• What is the purpose of the steel wool in the cracking experiment?

Cracking (2.7/2.8)

• How do the results of the experiment show the products to be a mixture of alkanes and alkenes?

• What are the important safety points in the cracking experiment?

Cracking (2.7/2.8)

• Which fractions from crude oil are most in demand?

• How do oil refineries meet this demand?

• What is a catalytic cracker? • Why are the products of cracking

then passed through a fractionating column?

Saturation (2.7)

• What do the words saturated and unsaturated mean? Give examples.

• What is the chemical test for unsaturation in hydrocarbons?

• What is an addition reaction? Give an example.

Isomers (2.9)

• What are isomers? • Can you draw some alkane isomers? • What is a cycloalkane? • Can you name the first ten

cycloalkanes, and give their molecular and structural formulae?

• What is the general formula of cycloalkanes and why are they isomeric with the alkenes?