This describes the essential skills and knowledge and their level required for this unit

Required skills

write chemical formulae

write and balance chemical equations

calculate heat of reaction

Required knowledge

Competence in this unit requires knowledge of

Kinetic Theory

Boyles Law Charles Law

Ideal Gas equation PVnRT

molar volume of a gas

GayLussacs Law Avogadros Law

gas reaction calculations

symbols of common elements

importance of valence in formulae and reactions

model of an atom including electron shells

The chemical basis of energy transformations in chemical reactions

Periodic table

Acids and Bases

Stoichiometry

The Evidence Guide provides advice on assessment and must be read in conjunction with the Performance Criteria Required Skills and Knowledge the Range Statement and the Assessment Guidelines for the Training Package

Overview of assessment

This competency also requires evidence of competency in the description of chemical laws principles and terminology The application of the chemical laws and principles to a selection of appropriate scenarios should also be required The scenarios may be drawn directly from the workplace or may be simulated case studies

Critical aspects for assessment and evidence required to demonstrate competency in this unit

It is essential that competence is demonstrated in the ability to

describe elements and compounds according to their chemical properties

use recognised and appropriate chemical symbols and terminology

Consistent performance should be demonstrated In particular look to see that

a wide variety of elements and compounds can be described

the application of chemical laws and reactions to non laboratory situations can be explained

Relationship to other units

This unit may be assessed concurrently with other relevant units

Assessment method and context

Assessors must be satisfied that the person can consistently perform the unit as a whole as defined by the Elements Performance Criteria and skills and knowledge The unit is suitable for assessment in conjunction with other metallurgy units and a holistic approach should be taken to the assessment wherever possible

Competence in this unit may be assessed

in a workplace

in a suitable laboratory facility

by use of a suitable simulation andor a range of case studiesscenarios

by a combination of these techniques

Resource implications

This section should be read in conjunction with the range of variables for this unit of competency No special resources are required However resources may be required where holistic assessment with other units is undertaken including suitable access to an operating plant or equipment that allows for appropriate and realistic simulation A bank of case studiesscenarios and questions will also be required to the extent that they form part of the assessment method Questioning may take place either in the workplace or in an adjacent quiet facility such as an office or lunchroom No other special resources are required

Codes of practice/standards

Context

Physical properties of crystalline solids

Key properties

Use of formulae

Definitions of acids and bases

Strong Acid

Weak acids

Strong bases

Weak bases

Stoichiometry