Welling School
BTEC First Certificate and Diploma in
Applied Science
Unit 3
Chemistry Applications
Centre
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Assignment
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Assignment 3.2
P2 Investigate and describe ionic, covalent and metallic bonds
M2 Investigate and explain the difference in properties of
substances with ionic, covalent and metallic bonded substances
D2 Explain bonding in terms of stability – a means of achieving
an empty outer shell either by transferring or sharing electrons
Learning Outcomes
EDEXCEL LEVEL 2 BTEC FIRST CERTIFICATE
AND DIPLOMA IN APPLIED SCIENCE BT 16/10/09

Know how atomic structure relates to the properties of the elements and
compounds.
Scenario
Your manager has just received a new contract from a chemical firm in the
USA. As part of this contract, your company will be carrying out investigations
into how different elements bond together to make new substances and how
these bonds affect the properties of the substances that are formed. Your
assignment is to carry out preliminary investigations into chemical bonds
which can be used as the bases for further research.
Tasks
P2 Using scientific literature and internet sites, carry out research into
ionic, covalent and metallic bonds. Use the results of your research to
produce an information poster, describing the three types of bonds,
which can be displayed in all laboratories within the company.
M2 Carry out a practical investigation into the properties of ionic, covalent
and metallic substances by investigating their solubility and
conductance of electricity. Also carry out research into the physical
states and melting and boiling points of these substances. Use all this
information to compile a report for your manager, which can be used as
the basis for further research.
D2 Using the knowledge you have gained from both this assignment and
the previous assignment (1.1), explain how the bonds that are formed
between substances make these substances stable. This can be
shown by choosing an example of a substance with ionic bonds and an
example of a substance with covalent bonds. For each show how
achieving an empty or full outer shell, by either transferring or sharing
electrons, makes the substance stable. Make a full write up of your
work which can be checked by your manager.
Assessor Comments:
EDEXCEL LEVEL 2 BTEC FIRST CERTIFICATE
AND DIPLOMA IN APPLIED SCIENCE BT 16/10/09

Resubmission Date:
Pupil Comments:
Assessors Signature Internal Verification Internal Verifiers
Date Signature
EDEXCEL LEVEL 2 BTEC FIRST CERTIFICATE
AND DIPLOMA IN APPLIED SCIENCE BT 16/10/09