This course covers Topic 4: Extracting Metals and Equilibria which is examined on Paper 1 of the GCSE Edexcel Combined Science Course.
The following information, included in this course, is examined at Higher Tier only:
Displacement reactions as redox reactions, in terms of gain or loss of electrons
Alternative biological methods of metal extraction (bacterial and phytoextraction)
Le Chatelier's Principle
This course describes the fundamental principles of extracting metals in chemical terms. We begin with an overview of the ore and metal extraction process. We also discuss displacement reactions, redox reactions, Le Chateliers's Principle and more.
Only the least reactive metals are found in their. Over time, the more reactive metals combine with non-metals to produce ore. the reactivity series shows how different metals can be treated depending on their chemical make-up.
These flashcards are an opportunity to quickly recap the important terms and concepts we have so far encountered on this course. we review the basics of ores and the reactivity series.
This module covers two biological methods of metal extraction. These are Bioleaching and Phytoextraction. These methods are particularly effective when dealing with low percentages of a desired metal. They are environmentally kinder too.
Recycling has many advantages. It reduces the need to extract further raw materials and causes less pollution to the environment. Running a life-cycle assessment helps to demonstrate the economic consequences of recycling.
Electrolysis can be used as a method for separating metal from ore. The process works by breaking down the ionic bonds between positively and negatively charged ions. Aluminium, for instance, is often extracted through electrolysis.
These flashcards will help you remember the most important terms and ideas we have covered in this section on electrolysis. Cation, Anion, Anodes and Cathodes are all part of the language of electrolysis in metal extraction.
Take this quiz to test what you have learned so far on this course. This quiz primarily covers the subject of electrolysis as a method of metal extraction.
In chemistry, reversible reactions are reactions in which the final product is capable of, by means of another reaction, reverting to the previous state of the initial reactants.
These flashcards will help you remember terms you may have encountered before. The terms deal primarily with concepts involved in the chemistry of industrial processes.
The Haber Process is a chemical process used for the production of substances such as ammonia, which is then used in a range of products such as fertiliser. An experiment is described here with the necessary formulae.
Le Chatelier's Principle, which is also known as the Equilibrium Law, states that is stress is applied to a system in equilibrium than that system will adjust in order to relieve that stress.
Take this short quiz to help review what you have learned about the Haber Process. Remember details such as the catalyst used in the reaction and why this catalyst is employed. we review the given ammonia experiment.
