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Chemistry

Home VCE Science Chemistry

Unit 1: How can the diversity of materials be explained?

The development and use of materials for specific purposes is an important human endeavour. In this unit students investigate the chemical properties of a range of materials from metals and salts to polymers and nanomaterials. Using their knowledge of elements and atomic structure students explore and explain the relationships between properties, structure and bonding forces within and between particles that vary in size from the visible, through nanoparticles, to molecules and atoms.

Areas of study

  • How can knowledge of elements explain the properties of matter?
  • How can the versatility of non-metals be explained?
  • Research investigation

There are three outcomes:

  • Relate the elements in the periodic table to their properties, investigate the structures and properties of metals and ionic compounds, and calculate mole quantities.
  • Investigate and explain the properties of carbon lattices and molecular substances with reference to their structures and bonding, use systematic nomenclature to name organic compounds, and explain how polymers can be designed for a purpose.
  • Investigate questions related to the development, use and/or modification of a selected material or chemical and communicate a substantiated response to the question.

Unit 2: What makes water such a unique chemical?

Water is the most widely used solvent on Earth. In this unit students explore the physical and chemical properties of water, the reactions that occur in water and various methods of water analysis. Students examine the polar nature of a water molecule and the intermolecular forces between water molecules. They explore the relationship between these bonding forces and the physical and chemical properties of water. In this context students investigate solubility, concentration, pH and reactions in water including precipitation, acid-base and redox. Students are introduced to stoichiometry and to analytical techniques and instrumental procedures, and apply these to determine concentrations of different species in water samples, including chemical contaminants. They use chemistry terminology including symbols, units, formulas and equations to represent and explain observations and data from experiments, and to discuss chemical phenomena. Students explore the solvent properties of water in a variety of contexts and analyse selected issues associated with substances dissolved in water.

Areas of study

  • How do substances interact with water?
  • How are substances in water measured and analysed?
  • Practical investigation

There are three outcomes:

  • Relate the properties of water to its structure and bonding, and explain the importance of the properties and reactions of water in selected contexts.
  • Measure amounts of dissolved substances in water and analyse water samples for salts, organic compounds and acids and bases.
  • Design and undertake a quantitative laboratory investigation related to water quality, and draw conclusions based on evidence from collected data.

Unit 3: How can chemical processes be designed to optimise efficiency?

The global demand for energy and materials is increasing with world population growth. In this unit students explore energy options and the chemical production of materials with reference to efficiencies, renewability and the minimisation of their impact on the environment.

Students compare and evaluate different chemical energy resources and investigate the combustion of fuels. They consider the purpose, design and operating principles of galvanic cells, fuel cells and electrolytic cells and calculate quantities in electrolytic reactions. Students analyse manufacturing processes with reference to factors that influence their reaction rates and extent. They apply the equilibrium law and Le Chatelier’s principle to predict and explain the conditions that will improve the efficiency and percentage yield of chemical processes.

Areas of study

  • What are the options for energy production?
  • How can the yield of a chemical product be optimised?

There are two outcomes:

  • Compare fuels quantitatively with reference to combustion products and energy outputs, apply knowledge of the electrochemical series to design, construct and test galvanic cells, and evaluate energy resources based on energy efficiency, renewability and environmental impact.Apply rate and equilibrium principles to predict how the rate and extent of reactions can be optimised, and explain how electrolysis is involved in the production of chemicals and in the recharging of batteries.
  • Apply rate and equilibrium principles to predict how the rate and extent of reactions can be optimised, and explain how electrolysis is involved in the production of chemicals and in the recharging of batteries.

Unit 4: Chemistry at Work

Carbon is the basis of the diverse compounds found in living tissues and in the fuels, foods, medicines and many of the materials we use in everyday life. In this unit students investigate the structural features, bonding, reactions and uses of the major families of organic compounds including those found in food.

Students process data from instrumental analyses to confirm or deduce organic structures, and perform volumetric analyses to determine the concentrations of organic chemicals in mixtures. They predict the products of reaction pathways and design pathways to produce particular compounds from given starting materials. Students investigate key food molecules including carbohydrates, proteins, lipids and vitamins and use calorimetry to determine the energy released in the combustion of food.

Areas of study

  • How can the diversity of carbon compounds be explained and categorised?What is the chemistry of food?Practical investigation
  • What is the chemistry of food?Practical investigation
  • Practical investigation

There are two outcomes:

  • Compare the general structures and reactions of the major organic families of compounds, deduce structures of organic compounds using instrumental analysis data, and design reaction pathways for the synthesis of organic molecules.Distinguish between the chemical structures of key food molecules, analyse the chemical reactions involved in the metabolism of the major components of food including the role of enzymes, and calculate the energy content of food using calorimetry. Design and undertake a practical investigation related to energy and/or food, and present methodologies, findings and conclusions in a scientific poster.
  • Distinguish between the chemical structures of key food molecules, analyse the chemical reactions involved in the metabolism of the major components of food including the role of enzymes, and calculate the energy content of food using calorimetry. Design and undertake a practical investigation related to energy and/or food, and present methodologies, findings and conclusions in a scientific poster.
  • Design and undertake a practical investigation related to energy and/or food, and present methodologies, findings and conclusions in a scientific poster.
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