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Preliminary chemistry

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Module 4 | Energy

Focus 5: The rate of energy release is affected by factors such as types of reactants

Lesson 1 | Reaction kinetics

  • Explain the importance of collisions between reacting particles as a criterion for determining reaction rates.

  • Explain the relationship between temperature and the kinetic energy of particles.

  • Explain the role of catalysts in changing the activation energy and hence the rate of chemical reaction.

  • Describe the role of catalysts in chemical reactions, using a named industrial catalyst as an example.

  • Analyse information from secondary sources to develop models to simulate the role of catalysts in changing the rate of chemical reactions.

Lesson 2 | Investigating rates of reaction

  • Solve problems, identify data, perform first-hand investigations and gather first-hand data where appropriate, to observe the impact on reaction rates of:
    – changing temperature
    – changing concentration
    – size of solid particles
    – adding catalysts

Lesson 3 | Combustion reaction rates

  • Describe combustion in terms of slow, spontaneous and explosive reactions and explain the conditions under which these occur.

  • Process information from secondary sources to investigate the conditions under which explosions occur and relate these to the importance of collisions between reacting particles.

  • Analyse information and use the available evidence to relate the conditions under which explosions occur to the need for safety in work environments where fine particles mix with air.

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    60 Lessons

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

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    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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    21 Interactive activities

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