blazing away!!!!. natural gas (2.1) what is the chemical name for natural gas? what are the...
TRANSCRIPT
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?