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-SQA- SCOTTISH QUALIFICATIONS AUTHORITY NATIONAL CERTIFICATE MODULE: UNIT SPECIFICATION GENERAL INFORMATION -Module Number- 3310484 -Session- 1994-95 -Superclass- WH -Title- ORGANIC CHEMISTRY FOR TEXTILES ------------------------------- -DESCRIPTIONGENERAL COMPETENCE FOR UNIT: Identifying and explaining nomenclature, structures and selected reactions of organic compounds. Describing the monomers and basic structures of addition and condensation fibre forming polymers and describing the organic compounds which make up the basic structures of linear wool protein and cellulose. OUTCOMES 1. apply the concepts of structures and nomenclature to represent organic compounds; 2. apply selected reactions of organic compounds to functional groups present; 3. explain the basic chemical structures of fibre forming polymers in terms of the starting materials and polymerisation reactions involved; 4. apply the basic chemical structures of amino acids, glucose and cellobiose to the basic chemical structures of linear wool protein, cellulose and cellulose ester fibres. CREDIT VALUE: 1 NC Credit ACCESS STATEMENT: 3310264 Basic Chemistry for Textiles. ---------------------------------For further information contact: Committee and Administration Unit, SQA, Hanover House, 24 Douglas Street, Glasgow G2 7NQ. Additional copies of this unit may be purchased from SQA (Sales and Despatch section). At the time of publication, the cost is £1.50 (minimum order £5). Unit No. 3310484 Continuation Session 1994-95 NATIONAL CERTIFICATE MODULE: UNIT SPECIFICATION STATEMENT OF STANDARDS UNIT NUMBER: 3310484 UNIT TITLE: ORGANIC CHEMISTRY FOR TEXTILES Acceptable performance in this unit will be the satisfactory achievement of the standards set out in this part of the specification. All sections of the statement of standards are mandatory and cannot be altered without reference to SQA. OUTCOME 1. APPLY THE CONCEPTS OF STRUCTURES AND NOMENCLATURE TO REPRESENT ORGANIC COMPOUNDS PERFORMANCE CRITERIA (a) (b) The application of full structural formulae is correct with respect to the given IUPAC organic compounds. The application of IUPAC nomenclature is correct with respect to the given structures of organic compounds. RANGE STATEMENT Structural formulae and IUPAC nomenclature for organic compounds: alkanes; alkenes; simple arenes; alkanols; alkanals; alkanones; alkanoic acids and their derivatives; simple aromatic carboxylic and sulphonic acids; aliphatic and simple aromatic amines. EVIDENCE REQUIREMENTS Written evidence of the ability to apply structural formulae for organic compounds in the given range. Written evidence of the ability to name organic compounds in the given range from a representation of its structure in terms of IUPAC nomenclature. 2 Unit No. 3310484 Continuation Session 1994-95 OUTCOME 2. APPLY SELECTED REACTIONS OF ORGANIC COMPOUNDS TO FUNCTIONAL GROUPS PRESENT PERFORMANCE CRITERIA (a) (b) The explanation of the organic products formed in the reaction of given organic compounds under specified conditions is correct with respect to nomenclature and structural formulae. The explanation of the starting materials which react to form a given organic compound under specified conditions is correct with respect to nomenclature and structural formulae. RANGE STATEMENT Nomenclature and structural formulae of specific reactants and products in selected reactions for different classes of reactants and organic compounds: hydrocarbons and compounds containing hydroxy; aldehyde; carboxyl; amine and ester functional groups. EVIDENCE REQUIREMENTS Written evidence of the ability to explain the structures of the organic product(s) formed in the reaction of given organic compounds under specified conditions. Written evidence of the ability to explain the structure(s) of the starting material(s) required to form a given organic compound under specified conditions. OUTCOME 3. EXPLAIN THE BASIC CHEMICAL STRUCTURES OF FIBRE FORMING POLYMERS IN TERMS OF THE STARTING MATERIALS AND POLYMERISATION REACTIONS INVOLVED PERFORMANCE CRITERIA (a) (b) (c) The explanation of the basic reactions in addition polymerisation is correct with respect to monomers related to alkenes/alkene derivatives. The explanation of the basic principles of condensation polymerisation is correct with respect to bifunctional monomers. The explanation of chemical structures of the monomers and polymers used to form fibres is correct with respect to polyamides, polyester, acrylic and polypropylene. 3 Unit No. 3310484 Continuation Session 1994-95 RANGE STATEMENT The range statement for this outcome is specified within the performance criteria. EVIDENCE REQUIREMENTS Written evidence of the ability to explain the basic principles of addition and condensation polymerisation reactions. Written evidence of the ability to explain the chemical structures of the monomers and polymers which are used to form polyamide, polyester, acrylic and polypropylene fibres. OUTCOME 4. APPLY THE BASIC CHEMICAL STRUCTURES OF AMINO ACIDS, GLUCOSE AND CELLOBIOSE TO THE BASIC CHEMICAL STRUCTURES OF LINEAR WOOL PROTEIN, CELLULOSE AND CELLULOSE ESTER FIBRES PERFORMANCE CRITERIA (a) (b) (c) The application of the names and basic chemical structures of amino acids in polypeptide molecules is correct with respect to the basic structure of linear wool protein molecules. The explanation of the chemical structures of glucose and cellobiose is correct. The application of chemical structures in polysaccharide molecules is correct with respect to cellulose and cellulose ester fibres. RANGE STATEMENT Names and basic chemical structures of amino acids: hydrocarbon; acidic; basic; hydroxy; sulphur containing types. Linear wool protein: linkage of amino acids, nature of side groups. Structures related to: monosaccharide; glucose; disaccharide; cellobiose; polysaccharide; cellulose and cellulose ester fibres. 4 Unit No. 3310484 Continuation Session 1994-95 EVIDENCE REQUIREMENTS Written evidence of the ability to identify the names and structures of different types of amino acid and to apply to the basic structure of linear wool protein molecules covering the above ranges. Written evidence of the ability to identify the structures of glucose and cellobiose and to apply to the structures of cellulose and cellulose acetate. --------------------------------- ASSESSMENT In order to achieve this unit, candidates are required to present sufficient evidence that they have met all the performance criteria for each outcome within the range specified. Details of these requirements are given for each outcome. The assessment instruments used should follow the general guidance offered by the SQA assessment model and an integrative approach to assessment is encouraged. (See references at the end of support notes). Accurate records should be made of the assessment instruments used showing how evidence is generated for each outcome and giving marking schemes and/or checklists, etc. Records of candidates' achievements should be kept. These records will be available for external verification. SPECIAL NEEDS In certain cases, modified outcomes and range statements can be proposed for certification. See references at end of support notes. Copyright SQA 1994 Please note that this publication may be reproduced in whole or in part for educational purposes provided that: (i) (ii) no profit is derived from the reproduction; if reproduced in part, the source is acknowledged. 5 Unit No. 3310484 Continuation Session 1994-95 NATIONAL CERTIFICATE MODULE: UNIT SPECIFICATION SUPPORT NOTES UNIT NUMBER: 3310484 UNIT TITLE: ORGANIC CHEMISTRY FOR TEXTILES SUPPORT NOTES: This part of the unit specification is offered as guidance. None of the sections of the support notes is mandatory. NOTIONAL DESIGN LENGTH: SQA allocates a notional design length to a unit on the basis of time estimated for achievement of the stated standards by a candidate whose starting point is as described in the access statement. The notional design length for this unit is 40 hours. The use of notional design length for programme design and timetabling is advisory only. PURPOSE This module will enable the candidate to gain sufficient knowledge of organic chemistry so that the candidate can proceed to further study of Higher National Certificate chemistry modules for textiles. This chemistry module will also act as a support for other textile modules. SQA publishes summaries of NC units for easy reference, publicity purposes, centre handbooks, etc. The summary statement for this unit is as follows: This module will enable you to gain an understanding of organic chemistry required for the chemistry of fibres and fibre processing. You will learn how to recognise different classes of organic compounds along with an understanding of some of their reactions important in textile chemistry. You will also relate organic chemistry to the formation and structures of polymers used as synthetic fibres. You will learn how to relate specific classes of organic compound to the primary structure of wool protein and to the structure of cellulose which serves as a basis for the further study of natural fibres in other textile or textile chemistry modules. CONTENT/CONTEXT Corresponding to Outcomes 1-4: 1. IUPAC nomenclature, extended structural formulae and condensed structural formulae of various organic compounds containing up to eight carbon atoms in the main chain to include alkanes, alkenes, arenes (benzene, naphthalene), alkanols, alkanals, alkanones, alkanoic acids and derivatives (esters, nitriles, anhydrides, amides) aromatic carboxylic and sulphonic acids, alphatic and simple aromatic amines. 6 Unit No. 3310484 Continuation Session 1994-95 2. Functional groups and characteristic chemical reactivity; saturated and aromatic hydrocarbons, substitution; carbon-carbon double bond, addition, polymerisation; hydroxyl and carboxyl or acid anhydride groups, esterification; aldehyde group, oxidation, reduction, addition; acid or base properties of carboxyl, sulphonic acid and amine groups; esters, hydrolysis. 3. Addition polymerisation; free radicals, copolymerisation. Tacticity in addition polymers. Basic principles of condensation polymerisation reactions. Chemical structures of monomers and polymers used to form acrylic, polypropylene, polyamide; polyester fibres. 4. Amino acids; classification, acidic, basic, hydrocarbon, hydroxy, sulphur containing types. Linkage of amino acids in linear wool protein, nature of side groups. Glucose, cellobiose, relation to cellulose and cellulose acetates. APPROACHES TO GENERATING EVIDENCE Chemical structures and reactions should be discussed using visual material such as OHP, molecular models or videos. Tutorials using worksheets should be used to reinforce main principles. Laboratory demonstrations can be carried out where possible to illustrate certain areas related to organic reactions. The outcomes should be tackled in the order shown. Each candidate should be assessed at appropriate points throughout the module. Where a candidate is unsuccessful in achieving an outcome, provision should be made for remediation and reassessment. ASSESSMENT PROCEDURES Centres may use Instruments of Assessment which are considered to be most appropriate. Examples of Instruments of Assessment are as follows: Outcomes 1-4 It is recommended that structured questions should be used here. An appropriate number of questions should be set in each outcome in order to assess all performance criteria ensuring that all of the range statements and evidence requirements are achieved. PROGRESSION The candidate could progress on to the appropriate SQA Higher National Unit in Textiles: Fibre/Polymer Chemistry, Dyestuff Chemistry (Colour and Constitution), Colour Measurement and Specification. RECOGNITION Many SQA NC units are recognised for entry/recruitment purposes. For up-to-date information see the SQA guide 'Recognised and Recommended Groupings'. 7 Unit No. 3310484 Continuation Session 1994-95 REFERENCES 1. 2. 3. 4. 5. Guide to unit writing. For a fuller discussion on assessment issues, please refer to SQA's Guide to Assessment. Procedures for special needs statements are set out in SQA's guide 'Students with Special Needs'. Information for centres on SQA's operating procedures is contained in SQA's Guide to Procedures. For details of other SQA publications, please consult SQA's publications list. Copyright SQA 1994 Please note that this publication may be reproduced in whole or in part for educational purposes provided that: (i) (ii) no profit is derived from the reproduction; if reproduced in part, the source is acknowledged. 8