Chemistry

In this lesson on Gas Pressure and Standard Laboratory Conditions, you will learn about:

• the definition of gas pressure including units, the universal gas equation and standard laboratory conditions (SLC) at 25 °C and 100 kPa

In this lesson on Stoichiometric Calculations Involving Gases and Enthalpy Changes, you will learn about:

• calculations related to the combustion of fuels including use of mass-mass, mass-volume and volume-volume stoichiometry in calculations of enthalpy change to determine heat energy released, reactant and product amounts and net volume of greenhouse gases at a given temperature and pressure released per MJ of energy obtained.

In this lesson on Fuel Choices, you’ll learn about:

• Fossil fuels
• The environmental impact of fossil fuels
• Biofuels

This post will take you through an introduction of galvanic cells for VCE Chemistry.

You will discover their purpose as primary cells and as portable or fixed chemical energy storage devices that can produce electricity (details of specific cells not required) including common design features (anode, cathode, electrolytes, salt bridge and separation of half-cells) and chemical processes (electron and ion flows, half-equations and overall equations).

Check out the video below to learn more about how they work:

This video offers an animated video os a copper-zinc battery.

An example of this is a fuel cell.

This video is another explanation on galvanic cells that students may find useful.

In this post you will learn about fuel cells and:

• the common design features including use of porous electrodes for gaseous reactants to increase cell efficiency (details of specific cells not required)
• the comparison of the use and combustion of fuels to supply energy with reference to their energy efficiencies (qualitative), safety, fuel supply (including the storage of hydrogen), production of greenhouse gases and applications
• the comparison of fuel cells and galvanic cells with reference to their definitions, functions, design features, energy transformations, energy efficiencies (qualitative) and applications.

The following video goes in more depth and includes VCE exam questions.