Outcomes A student: designs and evaluates investigations in order to obtain primary and secondary data and information CH11/12-2 conducts investigations to collect and reliable primary and secondary data and information CH11/12-3 selects and processes appropriate qualitative and quantitative data and information a range of appropriate media CH11/12-4 communicates scientific understanding using suitable language and terminology for a specific audience or purpose CH11/12-7 explores the properties and trends in the physical, structural and chemical aspects of matter CH11-8 Course Requirements and Resources Risk assessments associated with each practical investigation MSDS sheets 30 hours of scheduled coursework Access to ICT Support Websites Formal assessment (An example an assessment that could be used) Chemical Structures (page 10) The assessment task associated with this unit requires students to present a series of models, either physical or digital, to show the main features of the major types of chemical structure, including: ionic networks covalent lattices (including diamond and silicon dioxide) covalent molecular metallic structure Students will also need to provide suitable annotations, labels or notes associated with each type of structure, as well as naming representative examples. Topics Properties of Matter Atomic Structure and Atomic mass Periodicity Bonding Inquiry Questions How do the properties of substances help us to classify and separate them? Why are atoms of elements different from one another? Are patterns in the properties of elements? What binds atoms together in elements and compounds?
explore homogeneous mixtures and heterogeneous mixtures through practical investigations: separation techniques based on physical properties (ACSCH026) Revise the distinction between homogeneous and heterogeneous mixtures and pure substances and generate a list of mixtures that can be in the biosphere, lithosphere, hydrosphere and atmosphere. Identify and describe procedures that can be used to separate naturally occurring mixtures of: - solids with different sized particles - solids and liquids - dissolved solids in liquids - liquids - gases calculating percentage composition by weight of component elements and/or compounds (ACSCH007) Use a variety of processes, including filtration, distillation, separating funnel and chromatography, to separate the following mixtures, based on their physical properties: - sand and calcium carbonate - a suspension of calcium carbonate in water - salt dissolved in water - calcium sulphate, copper sulphate and - an oil and water mixture - alcohol and water - the colours in a felt-tipped pen W/S – Planning Investigations – CH11/12-2 W/S – Conducting investigations – CH11/12-3 Design and conduct an investigation to separate the components of a mixture and carry out a gravimetric analysis to estimate its percentage composition. W/S – Planning Investigations – CH11/12-2 W/S – Conducting investigations – CH11/12-3 W/S – Processing Data and Information – CH11/12-4 Students: investigate the nomenclature of inorganic substances using International Union of Pure and Applied Chemistry (IUPAC) naming conventions 4. Investigating nomenclature of inorganic substances: Students should their knowledge of naming inorganic compounds by viewing the following video: It is important to provide students with practice worksheets and quizzes to reinforce these ideas. Students should also make a list of chemicals and their names as they are encountered within the course. W/S – Communication – CH11/12-7 Students: 5. Classification of elements and Review of the Periodic Table structure: Conduct an investigation to examine some physical properties and uses of a of elements to present information about their classification as metals, non-metals and metalloids.
Students: explore the similarities and differences between the nature of intermolecular and intramolecular bonds and the strength of the forces associated with each, in order to explain the: physical properties of elements physical properties of compounds (ACSCH020, ACSCH055, ACSCH058) 4. Investigating intermolecular and intramolecular Using secondary data, investigate the following physical properties - melting and boiling points, volatility, electrical conductivity and solubility – for elements and compounds that show the 3 main types of intermolecular bonds: - dispersion forces - dipole-dipole forces - hydrogen bonding. Specific substances could include the halogen gases, the hydrogen halides, ammonia and water. Relate the nature and strength of the intermolecular bonds to the physical properties observed. W/S – Conducting investigations – CH11/12-3 W/S - Processing Data and Information – CH11/12-4 Relate the amount of energy needed to separate atoms and molecules in a molecular compound, to the nature of intermolecular and intramolecular bonds. Suitable examples include but are not limited to the boiling of water and the electrolysis of water. W/S - Processing Data and Information – CH11/12-4 Youtube: Intermolecular Forces and Boiling Points Students: investigate elements that possess the physical property of allotropy 5. Allotropes: Research the physical properties of the various allotropes of carbon (diamond, graphite and C60 fullerenes); oxygen (oxygen and ozone); phosphorus (red, white and black); sulphur (orthorhombic and rhombohedral) and tin (grey and white) W/S – Conducting investigations – CH11/12-3 W/S - Processing Data and Information – CH11/12-4 Reflection and Evaluation TEACHER: DATE UNIT COMMENCED: DATE UNIT CONCLUDED: Variations to program: (List additional resources and outline alternative strategies used.