Transcript C1a Revision

Rocks and Building
Complete the paragraph:
Limestone is mostly made of………carbonate
(whose chemical formula is ……….)As well
Draw and label a Helium atom
as being used to produce building material. (include labels for electrons and neutrons )
Limesstone can be used to produce…………. , ……………
and …………. That can be also used in building.
Rocks and Metals
Match to the correct explanation about the iron extraction process
Haematite
-Helps remove impurities in the iron
Coke
-is made from coal. Acts as a reducing agent.
Blast Furnace
-Is the most common iron ore
Limestone
-What we extract iron in
What does thermal decomposition mean?
What is an alloy?
Complete the general formula for the decomposition of carbonates:
____________  _________ + __________
Another name for slaked lime is…..
Another name for quick limes is
List some properties for each of these building materials:
Cement
Concrete
Glass
Crude oil is a mixture/compound (delete as appropriate)
Give 2 examples of alloys and where we might use them
Burning Fuels
effects
Draw propane
Causes
Write its chemical formula:
The longer the hydrocarbon chain the:
(delete as appropriate)
Higher/lower boiling point
More/less volatile
More/less viscosity
More/less flammable
Solutions…..
Crude oil is derived from ancient biomass
found in rocks. Many useful materials can be
produced from crude oil. Some of these are
burnt as fuels. Evaluate the impact on the
environment of burning hydrocarbon fuels
and the social economic and environmental
impact of uses of fuels.
Emulsions are commonly used in many
foods. Evaluate the use, benefits,
drawbacks and risks of using emulsifiers in
foods.
Olives grow in some parts of the world. They
are a good source of oil. This olive oil is
used in cooking , it is eaten as a food and
can be used as a fuel. Write about why
olives can be used in this way.
Polymers are a very important type of
substance in todays society. However, many
people are worried about how to dispose of
them. Explain why disposing of polymers is
a particular problem.
Most of the iron we use is converted into
steels. Describe and explain how the
differences in the properties of the three
main types of steel allow them to be used in
different ways.
Describe and explain how the fractions are
separated in a fractionating column.
The atmosphere of the Earth today contains
about 21% oxygen, 78% nitrogen and 1%
other gasses. Describe how the early
atmosphere may have been different to
todays atmosphere.
Metal carbonates, such as limestone
decompose into carbon dioxide when
heated. Some carbonates decompose at a
higher temperature. Describe an experiment
to find out which of the two carbonates
decomposes at the highest temperature.
Each year billions of plastic bags are given
free to shoppers. These bags are made from
poly(ethane) and are often used only once.
After being used many of these plastic bags
are either thrown away as litter or buried in
landfill sites. Describe the advantages and
disadvantages of using plastic shopping
bags made from poly (ethene).
In Brazil, ethanol has been used as a
vehicle fuel from many years. Ethanol can
be produced by the fermentation of plant
sugars, such as those in sugar cane. It can
also be produced from ethane gas. Ethene
is made from crude oil. Outline the
advantages and disadvantages of producing
ethanol from plant crops, compared to
producing ethanol from ethane.
Many drinks cans are made of aluminium. In
2008, people in Germany recycled 96% of
their aluminium cans while just 51% of
British aluminium cans were recycled. The
rest were buried in landfill sites. Give
reasons why Britain should increase the
percentage of aluminium cans it recycles.
Iron ore is an important resource is it
quarried in some parts of the UK. Evaluate
the social, economic and environmental
impacts of quarrying for Iron ore.
Many plants produce useful oils that can be
converted into consumer products including
processed foods. Explain the advantages
and disadvantages of using vegetable oils in
food and the impacts on diet and health.
Wegener’s theory of crustal movement
(continental drift) was not generally
excepted for many years. Outline the
conflicting theories and explain why
Wegener was not accepted at the time.