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Chemistry Revision

1. This question is about rocks and metals. Iron is the second most
abundant metal in the earth's crust, and is widely used all over the
world, due to its properties and ability to produce steel as an alloy.
Describe the production of steels including…

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Chemistry Revision

How to use this mark scheme
All words or phrases presented with use of underlining/highlighting mean that
they account for marks, although marker should ensure that the answer is
structured properly in full sentences to allow full marks, with clearly described

Q Topic Mark Scheme…

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least two types of the following:
Carbon steels: 0.03-1.5% Carbon impurities.
Properties: cheapest steels. Used in bodies of
cars, knives, machinery, ships, containers,
structural steel for buildings.
Low-alloy steels: 1-5% of other metals. This
includes nickel, chromium, manganese,
vanadium, titanium and tungsten. Uses, e.g.
nickel steel used for bridge structures.…

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2 Salts · Chosen type of reaction for one mark.
Introduction or within answer, you must include
understanding of which reaction is taking place
from the list below:
Acid + metal -> salt + hydrogen
Acid + base -> salt + water
Acid + alkali -> salt + water


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