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ACSCH071

The activation energy is the minimum energy required for a chemical reaction to occur and is related to the strength of the existing chemical bonds; the magnitude of the activation energy influences the rate of a chemical reaction

Unit 2: Molecular interactions and reactions Chemistry

In this unit, students develop their understanding of the physical and chemical properties of materials including gases, water and aqueous solutions, acids and bases. Students explore the characteristic properties of water that make it essential for physical, …

Unit 2 | Chemistry | Science | Senior secondary curriculum

ACSCH045

Select, construct and use appropriate representations, including physical and graphical models of molecules, energy profile diagrams, electron dot diagrams, ionic formulae, chemical formulae, chemical equations and phase descriptors for chemical species …

ACSCH068

Varying the conditions present during chemical reactions can affect the rate of the reaction and in some cases the identity of the products

ACSCH069

The rate of chemical reactions can be quantified by measuring the rate of formation of products or the depletion of reactants

ACSCH072

Energy profile diagrams can be used to represent the enthalpy changes and activation energy associated with a chemical reaction

ACSCH064

The presence of specific ions in solutions can be identified using analytical techniques based on chemical reactions, including precipitation and acid-base reactions

ACSCH070

Collision theory can be used to explain and predict the effect of concentration, temperature, pressure and surface area on the rate of chemical reactions by considering the structure of the reactants and the energy of particles

ACSCH061

Water is a key substance in a range of chemical systems because of its unique properties, including its boiling point, density in solid and liquid phases, surface tension, and ability to act as a solvent

ACSCH073

Catalysts, including enzymes and metal nanoparticles, affect the rate of certain reactions by providing an alternative reaction pathway with a reduced activation energy, hence increasing the proportion of collisions that lead to a chemical change

ACSCH046

Select and use appropriate mathematical representations to solve problems and make predictions, including using the mole concept to calculate the mass of chemicals and/or volume of a gas (at standard temperature and pressure) involved in a chemical reaction, …

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