Brown's Chemistry AQA GCSE Science-CHEMISTRY 1 Revision Notes
Chemistry Unit 1 C1.2 Limestone and building materials
CHEMISTRY UNIT 1 Chemistry 1
for GCSE Science or GCSE Chemistry
REVISION NOTES GUIDE SUMMARY: What do you need to know
for the examinations? What do you need to able to do in the exams? In AQA GCSE Science
A examinations HT means for higher tier students only.
Sorry, but I don't have much time to answer questions, but if you see any
apparent errors or wish to comment, please
email me. All my notes, learning
objectives, comments for exam revision are based on the official AQA GCSE Science A Key Stage 4
Throughout this unit you will be
expected to write word equations for reactions specified.
Higher tier (HT)
candidates will also be expected to write and balance symbol
equations for reactions specified throughout the unit.
AQA GCSE Science CHEMISTRY
Unit C1.2 Limestone and building materials
Know that rocks provide essential building materials.
Know that limestone is a naturally occurring
resource that provides a starting
point for the manufacture of cement and concrete.
Using your skills, knowledge
and understanding you are expected to be able to:
consider and evaluate the environmental, social and
economic effects of exploiting limestone and
producing building materials from it,
evaluate the developments in using limestone,
cement and concrete as building materials, and
their advantages and disadvantages over other
You should know that limestone
is needed for buildings and that the positive benefits of using this
material should be considered against the negative aspects of quarrying.
Your expected knowledge of
building materials is limited to limestone, cement and concrete.
You are not expected to have
knowledge of particular developments, but, information may be supplied in
examination questions for you to evaluate.
Knowledge of the properties of
other building materials is not required, but you may be provided with
information about materials such as timber, stone, glass and steels in the
examination so that you can make comparisons about their uses.
AQA GCSE Science CHEMISTRY Unit
C1.2.1 Calcium carbonate
a) You should know that limestone
is mainly composed of the compound
calcium carbonate (CaCO3), is quarried and can be
used as a building material.
b) Know that calcium carbonate can be decomposed by
heating to make calcium
oxide and carbon dioxide.
c) Know that the carbonates of magnesium, copper, zinc,
calcium and sodium decompose on heating in
a similar way.
Your knowledge and understanding of metal carbonates is
limited to metal carbonates decomposing on heating to
give carbon dioxide and the metal oxide.
You should know that not all
carbonates of metals in Group 1 of the periodic table decompose at the
temperatures reached by a Bunsen burner flame.
d) Calcium oxide reacts with water to produce calcium
hydroxide, which is an alkali that can be used in the
neutralisation of acids.
e) Know that a solution of calcium hydroxide in water (limewater)
reacts with carbon dioxide to produce calcium
f) Know that carbonates react with acids to produce carbon
dioxide, a salt and water.
Know that limestone is damaged
by acid rain which reacts with it.
Your knowledge of the reaction of carbonates with acids is limited to the
reactions of magnesium, copper, zinc, calcium and
sodium eg observations, products and equations.
g) Know that limestone is heated with clay to make cement.
Hopefully your practical work to develop skills and understanding
the following (which should also be revised, helps in understanding 'how science
works' and context examination questions):
investigating the limestone cycle:
decomposition of CaCO3 to give CaO,
reaction with water to give
addition of more water and filtering to give limewater and use of
limewater to test for CO2,
thermal decomposition of CaCO3 to show limelight
- glowing white hot 'lime'
honeycomb demonstration: heat sugar syrup mixture to 150 °C and add sodium
making concrete blocks in moulds, investigation of variation of content and
carrying out strength tests
designing and carrying out an investigation of trends in the thermal decomposition
of metal carbonates
investigation of the reaction of carbonates with acids.
Revision notes and quizzes
AQA GCSE Science CHEMISTRY
When revising, these pages
provide you with a summary of what you need to know and be able to do.
BUT remember, your primary
source of revision are your class notes, investigations and AQA GCSE
AQA GCSE Science A GCSE Chemistry Unit C1 Index
GCSE Science-Chemistry courses
AQA GCSE Science A CHEMISTRY *
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OCR GCSE 21st Century
Science A CHEMISTRY * OCR GCSE Gateway
Science B CHEMISTRY
Science-CHEMISTRY * Northern
Ireland CCEA GCSE Science-CHEMISTRY
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