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Qualification
Edexcel BTEC Level 1/Level 2 First Award in Principles of Applied Science
Assessment reference and title:
2A: Investigating chemical reactivity and bonding
Scenario
You are a chemist working for a large chemical company that has just employed a number
of new science technicians. You have been asked to prepare support materials for the
new employees explaining the trends in the group 1 and group 7 elements. The support
materials are to be given out to the new employees as an introduction to what elements
the company uses in its manufacture of products.
It is important for quality control laboratory technicians to understand how chemical
substances are bonded together, in order for them to carry out laboratory tests on
products as they are produced. As part of the induction day for the new laboratory
technician recruits to your chemical company, you will need to present material showing
how compounds and molecules are formed through ionic or covalent bonding, and how
their properties are related to the bonding and structure.
Task Ref.
Evidence submitted
Assessor’s comments:
Page numbers or
description
Assignment content
Ref.
A.1
Task content
A.2
Bonding and structure:
a. Formulae of molecules (in A.2b and A.2c)
b. Covalent bonding (hydrogen, chlorine, carbon dioxide, methane,
water, oxygen)
c. Ionic bonding (sodium chloride, magnesium chloride, magnesium
oxide)
d. Properties of simple covalent, giant covalent and ionic structures
Chemical and physical properties of groups 1 and 7 of the periodic table:
a. Trends in physical properties of group 1 and 7 (appearance,
melting point, boiling point, electrical conductivity)
b. Reactivity with water for group 1
c. Displacement reactions for group 7
d. Trends in chemical properties in group 1 and group 7 (electron
configuration and reactivity)
P1 Describe the physical
and chemical properties
of group 1 and 7
elements
M1 Describe trends in
the physical and chemical
properties of group 1 and
7 elements
P2 Compare the
properties of ionic and
covalent substances
M2 Explain the
properties of ionic and
covalent substances
P3 Draw dot-and-cross
diagrams of simple ionic
and covalent structures
M3 Describe the
formation of ionic and
covalent substances
D1 Explain the trends in
chemical properties of
group 1 and 7 elements
in terms of there
electronic structure
D2 Relate applications of
compounds to their
properties and to their
bonding structure.
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clearly referenced any sources used in the work. I understand that false
declaration is a form of malpractice.
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