Study-Unit Description

Study-Unit Description


TITLE Chemical Principles for Engineers

LEVEL 03 - Years 2, 3, 4 in Modular Undergraduate Course


DEPARTMENT Metallurgy and Materials Engineering

DESCRIPTION This study-unit will present students with the following chemical concepts:

Fundamentals: atomic structure and mass, ions, compounds and chemical bonds, chemical nomenclature, molecules, moles, chemical equations, stoichiometry, limiting reactants and gases.

Periodic Table and Atomic Structure: electromagnetic spectrum, atomic spectra, quantum mechanical model of the atom, electron configurations, periodic trends in atomic properties.

Chemical Bonding: ionic and covalent bond, electronegativity and bond polarity, lewis structures, orbitals and bonding, hybrid orbitals, shapes of molecules.

Molecules and Materials: condensed phase solids, bonding in solids, intermolecular forces, condensed phases (vapour pressure and surface tension), polymer basics.

Chemical Thermodynamics: chemical energy, thermochemistry, first law of thermodynamics, reversible and irreversible processes, entropy and the second law of thermodynamics, entropy calculations and free energy.

Chemical Equilibrium: equilibrium constants, equilibrium for gas phase reactions, Le Chatelier's principle.

Aqueous Equilibria: ionization of water, acids, bases, pH, electrolytes, buffers and solubility.

Electrochemistry: oxidation and reduction, standard reduction potentials, non-standard conditions, cell potentials and galvanic cells, batteries.

Chemical Kinetics: rates of chemical reactions, rate laws and concentration dependence, integrated rates, temperature and kinetics, catalysis.

Study-unit Aims:

This study-unit provides engineering students with a basic understanding of chemical principles aimed to help them better appreciate Materials related classes, namely Materials Science (1 and 2) but also later more specialized study units, namely polymers, ceramics, Materials Degradation, Nanotechnology and Biomaterials.

Learning Outcomes:

1. Knowledge & Understanding:

By the end of the study-unit the student will be able to:
- Describe the arrangement of elements in the periodic table and explain the usefulness of the table;
- Balance chemical equations, define concentration and calculate the Molarity of solutions from appropriate data;
- Identify a 'limiting reactant' and calculate the amount of product formed from a non-stoichiometric mixture of reactants;
- Sketch the shape of the s- and p-orbitals and recognize orbitals by their shapes;
- Predict molecular shape given a Lewis structure;
- Identify the type of intermolecular forces likely to be the most important for a named substance such as a solvent;
- Define the rate of a chemical reaction and express rate in terms of the concentrations of individual reactants or products;
- Use the method of initial rates to determine the rate laws from experimental data;
- Use calorimetric data to obtain values for dE and dH for chemical reactions; define standard heat of formation and write formation reactions for compounds;
- Write equilibrium constant expression for any reversible reaction and calculate equilibrium constant from experimental data;
- Write equilibrium constants for the dissociation of weak acids and bases and use the to calculate the pH;
- Use Le Chatelier's principle to explain the response of an equilibrium system to an applied stress;
- Define oxidation and reduction and write balance half reactions for simple redox processes;
- Use standard reduction potentials to calculate Ecell values under standard and non-standard conditions and predict the spontaneous direction of a redox reaction.

2. Skills:

By the end of the study-unit the student will be able to apply chemical knowledge learnt in order to better understand chemical concepts in later advanced materials engineering coursework such as degradation and nanotechnology.

Main Text/s and any supplementary readings:

- L. S. Brown and T. A. Holme, Chemistry for Engineering Students, 3rd Edition,Cengage Learning, USA, (2014) ISBN-10: 1305256670.
- E. N. Ramsden, A-Level Chemistry, 4th Edition, Oxford university press, (2014). ISBN-10: 0748752994.
- M. J. Shultz, Chemistry for Engineering, An Applied Approach, Houghton Mifflin Company, (2007) ISBN-10: 0-618-73064-8.

STUDY-UNIT TYPE Lecture, Independent Study & Tutorial

Assessment Component/s Assessment Due Resit Availability Weighting
Examination (2 Hours) SEM2 Yes 100%

LECTURER/S Daniel Vella

The University makes every effort to ensure that the published Courses Plans, Programmes of Study and Study-Unit information are complete and up-to-date at the time of publication. The University reserves the right to make changes in case errors are detected after publication.
The availability of optional units may be subject to timetabling constraints.
Units not attracting a sufficient number of registrations may be withdrawn without notice.
It should be noted that all the information in the study-unit description above applies to the academic year 2018/9, if study-unit is available during this academic year, and may be subject to change in subsequent years.