The Basic Economic Problem: Scarcity The?basic economic problem?is that resources are?scarce There are?finite resources?available in relation to the?infinite wants and needs?that humans have...
Positive & Normative Statements Positive economics?is concerned with?objective statements?of how a market or an economy works These?positive economic statements?are based on empirical ev...
The Process of Developing Models Economics is a?social science It studies societies and the?human interactions?within those societies Human interactions are complex and are influenced by?man...
Core Practical 16: Preparation of Aspirin This practical covers a number of key laboratory skills use appropriate apparatus to record a range of measurements use water bath or electric heate...
Core Practical 15: Analysis of Inorganic and Organic Unknowns Testing for positive ions Simple test tube reactions can be done to identify the following positive ions: Group 2 ions (M2+) Amm...
Core Practical 12: Preparing a Transition Metal Complex Method Weigh between 1.4?g and 1.6?g of copper(II) sulfate. To do this you should weigh a test tube and record its mass. Then add the ...
Core Practical 11: Redox Titration Redox Titrations In a?titration, the concentration of a solution is determined by titrating with a solution of known concentration. In redox titrations, an...
Core Practical 14: Finding the Activation Energy of a Reaction In this practical the activation energy for the reaction between bromide ions and bromate(V) ions will be determined BrO3-?+ 5B...
Core Practical 13a: Titrimetric Methods The reaction between iodine in an acidic solution and propanone is CH3COCH3?(aq) + I2?(aq) →?CH3COCH2I?(aq) + H+?(aq) +?I-?(aq) We can follow the rate...
