Mandatory Lab Ideas, Topic 1.3, Titrations

Last month's post focused on the mandatory lab covered in section 1.2, ‘The obtaining and use of experimental data for deriving empirical formulas from reactions involving mass changes’. This month, I thought I would carry on with this theme and focus on the second mandatory lab found in topic 1.3, namely ‘use of the experimental method of titration to calculate the concentration of a solution by reference to a standard solution’. Personally, I think titrations form the nuts and bolts of the ...

Resources for building your own mesocosm

As summarised in my previous blog, Practical 5 Setting up sealed mesocosms to try to establish sustainability Guidance: Mesocosms can be set up in open tanks, but sealed glass vessels are  preferable because entry and exit of matter can be prevented but light can enter and heat can leave. Aquatic systems are likely to be more successful than terrestrial ones. The two key concepts addressed when studying a mesocosm include; A mesocosm as a model of a larger ecosystem A closed ecosystem, one in ...