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Course Title: BTEC First Diploma in Applied Science - DOC by vHqR6dL

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									       John Bentley School                                 Department of Science

       BTEC First Diploma                                       Course tutor
       in Applied Science                                       Mrs E Laird

                             Unit 3: Chemical Applications
                       Investigating the properties of materials

 Date set: 23rd January 2009             Interim Deadline: 13th February 2009
                                               Final Deadline: 4th March 2009


                                         Scenario
 Fire fighting science investigators need background knowledge of the properties of
 their ionic, covalent and or metallically bonded substances. They need to analyse
 the residues left from a fire and find out what they were originally made of in
 order to ascertain what started the fire.

 You have been asked to investigate the properties of some sample materials to gain
 an understanding of their properties and how the atomic particles in the materials
 are bonded together.




                                   Assessment Evidence
Unit                                   Grading Criteria
         P2   Investigate and describe ionic, covalent and metallic bonds
              Investigate and explain the difference in properties of substances with
         M2
 3            ionic, covalent and metallic bonded substances
              Explain bonding in terms of stability – a means of achieving a full outer
         D2
              shell either by transferring or sharing electrons



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    John Bentley School                                  Department of Science

     BTEC First Diploma                                       Course tutor
     in Applied Science                                       Mrs E Laird

                                    Unit 3
                   Investigating the properties of materials
Date set: 23rd January 2009        Interim Deadline: 13th February 2009

                               Task 1 – Ionic bonding
Pass
     Draw and describe ‘electron shell diagrams’ and ‘dot and cross’ diagrams of
sodium chloride.
     Research the properties of substances with Ionic bonds (group 1 salts)
          o Find out about their physical state, melting point and boiling point
          o Investigate the structures of ionically bonded substances by examining
             models of structures
     Investigate their solubility in water and organic solvent and their conductance
      of electricity.
                                                                                    P2
Merit
     Explain the properties of ionic bonded substances.
     Use at least 2 named examples and include one application of an ionic
substance.
                                                                                   M2
Distinction
     Explain how ionic substances achieve stability
                                                                                    D2
    John Bentley School                                   Department of Science

     BTEC First Diploma                                        Course tutor
     in Applied Science                                        Mrs E Laird

                             Task 2 – Covalent bonding
Pass
      Draw and describe ‘electron shell diagrams’ and ‘dot and cross’ diagrams of
oxygen and chlorine
      Research the properties of substances with Covalent bonds (e.g. oxygen,
chlorine)
          o Find out about their physical state, melting point and boiling point.
          o Investigate the shapes and bonding of simple covalently bonded
             molecules
                                                                                     P2
Merit
     Explain the properties of covalent bonded substances.
     Use at least 2 named examples and include one application of a covalent bonded
substance.
                                                                                  M2
Distinction
     Explain how covalent substances achieve stability
                                                                                  D2




                        Task 3 – Metallic and Giant bonding
Pass
     Draw and describe the macromolecular structures of diamond and graphite.
     Research the properties of substances with Metallic bonds (all metals)
         o Find out about their physical state, melting point and boiling point.
     Investigate the structures of metallically bonded and giant macromolecular
substances by examining models of structures.
                                                                                     P2
Merit
     Explain the properties of metallic bonded substances.
     Use at least 2 named examples and include one application of a metallic
substance.
                                                                                     M2
     John Bentley School                                  Department of Science

     BTEC First Diploma                                       Course tutor
     in Applied Science                                       Mrs E Laird


                           Unit 3: Chemistry Applications
                      Investigating the properties of materials

Student:                                        Final Deadline: 4th March 2009




Unit             Grading Criteria                    To improve your grade … …
                  Draw and describe
            ‘electron shell diagrams’ and
            ‘dot and cross’ diagrams of
            sodium chloride

                   Research properties of
            ionic substances
               o       physical state,
               melting and boiling point.
               o       Investigate the
               shapes and bonding of ionic
               bonded substances
               o       Investigate solubility
                 in water, organic solvent &
                 electricity conductance
 3     P2
                  Draw and describe
            ‘electron shell diagrams’ and
            ‘dot and cross’ diagrams of
            oxygen and chlorine

                 Research properties of
            covalent substances
              o       physical state,
              melting and boiling point.
              o       Investigate the
              shapes and bonding of
              simple covalent molecules
     John Bentley School                            Department of Science

       BTEC First Diploma                               Course tutor
       in Applied Science                               Mrs E Laird

Unit              Grading Criteria             To improve your grade … …

                   Draw and describe the
              macromolecular structures of
              diamond and graphite

                   Research the
              properties of substances with
 3       P2   Metallic bonds (all metals)
                o       Physical state,
                melting point & boiling
                point.
                o       Investigate the
                structures of metallically
                bonded and giant
                macromolecular substances

                    Explain the properties
              of ionic bonded substances.
                    2 named ionic examples
              and one application

                Explain the properties
           of covalent substances.
 3      M2
                2 named examples and
           one application

                   Explain the properties
              of metallic bonded substances.
                   2 named examples and
              one application



                   Explain how ionic
              substances achieve stability
 3       D2
                   Explain how covalent
              substances achieve stability
    John Bentley School                                   Department of Science

     BTEC First Diploma                                        Course tutor
     in Applied Science                                        Mrs E Laird

                               Alternative assignment



                                       Task 1
     Research the properties of;
             - Substances with Covalent bonds (e.g. oxygen, chlorine, sodium chloride,
               graphite, diamond)
             - Substances with Metallic bonds (all metals)
             - Substances with Ionic bonds (group 1 salts)
     Find out about their physical state, melting point and boiling point.
     Investigate the shapes and bonding of simple covalently bonded molecules
     Investigate the structures of ionically bonded, giant macromolecular covalently
      bonded and metallically bonded substances by examining models of structures.
     Investigate their solubility in water and organic solvent and their conductance
      of electricity.

                                       Task 2
Pass
     Draw and describe ‘electron shell diagrams’ and ‘dot and cross’ diagrams of
oxygen, chlorine and sodium chloride.
     Draw and describe the macromolecular structures of diamond and graphite.
                                                                                    P2
Merit
      Explain the difference in properties of substances with ionic, covalent and
metallic bonded substances. This may be best achieved by using a table of examples
and their properties. Include an application of an ionic, covalent and metallic bonded
substance                                                                            M2

Distinction
     Explain how ionic and covalent substances achieve stability either by donating
accepting or sharing electrons.
                                                                                   D2
John Bentley School   Department of Science

BTEC First Diploma        Course tutor
in Applied Science        Mrs E Laird

								
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