EdExcel GCSE - Chemistry - Topic 4 - Extracting Metals and Equilibria

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GCSE Chemistry Flashcards on EdExcel GCSE - Chemistry - Topic 4 - Extracting Metals and Equilibria, created by Malachy Moran-Tun on 13/10/2020.
Malachy Moran-Tun
Flashcards by Malachy Moran-Tun, updated more than 1 year ago
Malachy Moran-Tun
Created by Malachy Moran-Tun over 3 years ago
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Question Answer
Reactivity Series. 3. 2. 1. GO! (most to least) Potassium K Sodium Na Calcium Ca Magnesium Mg Aluminium Al Carbon C Zinc Zn Iron Fe Hydrogen H Copper Cu Silver Ag Gold Au
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What is Oxidation? Loss of Electrons or sometimes Gain of Oxygen
What is Reduction? Gain of Electrons or sometimes Loss of Oxygen
What is a Redox Reaction? A reaction where Oxidation and Reduction happen Simultaneously
What happens in a Displacement Reaction? A More Reactive Element reacts to take the place of a Less Reactive Element in a compound.
True / False Metals More Reactive than Carbon can be Extracted by Reduction with Carbon? False Metals that are Less Reactive can
What Extraction Method is used for Metals More Reactive than Carbon? Electrolysis
Is Reduction with Carbon or Electrolysis more Expensive for the Extraction of Metals? Electrolysis
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What is a Reversible Reaction? A reaction that can go both forwards and backwards
Without a change in Pressure or Temperature, how do Reversible Reactions reach an Equilibrium Forward Reaction's concentration falls as Backward Reaction's concentration rises. Eventually they will be exactly at the same rate. This is equilibrium. Both reactions are both happening, but there's no overall effect
How can an Equilibrium lie to the Right / Left? The concentration of the products / reactants is greater than the concentration of the reactants / products.
What 3 Things can Change the Position of Equilibrium? 1. Temperature 2. Pressure 3. Concentrations
What is Le Chatelier's Principle? If there's a change in concentration, pressure or temperature in a reversible reaction, the equilibrium position will move to help counteract the change
What does Changing the Temperature in a Reversible Reaction do to the Equilibrium? Decreasing - Exothermic Direction - Produce more heat Increasing - Endothermic Direction - Absorb extra heat
What does Changing the Pressure in a Reversible Reaction do to the Equilibrium? Decreasing - More moles of gas - Increase pressure Increasing - Less moles of gas - Decrease pressure
What does Changing the Concentration in a Reversible Reaction do to the Equilibrium? Increase - Opposite side (more products / reactants) Decrease - Towards same side
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