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Preliminary chemistry

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Module 1 | The chemical Earth

Focus 5: The properties of elements and compounds are determined by their bonding and structure

Lesson 1 | Lattice structures

  • Distinguish between metallic, ionic and covalent bonds.

  • Describe metals as three dimensional lattices of ions in a sea of electrons.

  • Describe ionic compounds in terms of repeating three-dimensional lattices of ions.

  • Explain why the formula for an ionic compound is an empirical formula

  • Identify common elements that exist as molecules or as covalent lattices.

  • Choose resources and process information from secondary sources to construct and discuss the limitations of models of ionic lattices, covalent molecules and covalent and metallic lattices.

Lesson 2 | Classification based on physical properties

  • Describe the physical properties used to classify compounds as ionic or covalent molecular or covalent network.

  • Perform an investigation to examine the physical properties of a range of common substances in order to classify them as metallic, ionic or covalent molecular or covalent network substances and relate their characteristics to their uses.

  • Explain the relationship between the properties of conductivity and hardness and the structure of ionic, covalent molecular and covalent network structures.

Lesson 3 | Comparing physical properties

  • Identify differences between physical and chemical properties of elements, compounds and mixtures.

  • Perform a first-hand investigation to compare the properties of some common elements in their elemental state with the properties of the compound(s) of these elements (eg magnesium and oxygen).

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  • HSCStudy Lab Lessons

    60 Lessons

    Lessons by expert teachers that cover the NSW Preliminary Chemistry Syllabus comprehensively.

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    60 Practice questions

    60 lesson quizzes that include a variety of questions. This course also includes 20 focus level and 4 module level tests, as well as a comprehensive end of course practice exam.

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    51 Hours of video

    Videos that fully explain complex chemistry questions through animation, practical experiments, and tutorials.

  • HSCStudy Lab interactives

    21 Interactive activities

    Interactive activities that help you explore and understand key syllabus dot point as well as additional resources such as an interactive Periodic Table.

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