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Description
Flashcards by Malachy Moran-Tun, updated more than 1 year ago
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Created by Malachy Moran-Tun
about 5 years ago
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| Question | Answer |
| What is Electrolysis? | The Breaking Down of a Substance using Electricity. A Direct Current (DC) Electrical Current is passed through an Electrolyte This causes the Electrolyte to Decompose |
| What is an Electrolyte? | A Molten or Dissolved Ionic Compound used in Electrolysis |
| What is Oxidation? | Loss of Electrons |
| What is Reduction? | Gain of Electrons |
| What are Positive Ions called? | Cations |
| What are Negative Ions called? | Anions |
| Which Electrode do Cations move to? | The Cathode (negative electrode) |
| Which Electrode do Anions move to? | The Anode (positive electrode) |
| What does Inert mean? | Unreactive |
| Revision Guide for Electrolysis Practical Example | green is a colour |
| Why does the Electrolyte have to be Molten or Aqueous? | The Ions have to be able to Move. When they are Solid, they are in Fixed Positions |
| What 2 Things can happen at the Cathode when carrying out Electrolysis in Aqueous Solutions? | 1. If (H⁺ ions and) metal ions are present, hydrogen gas is produced if the metal is more reactive than hydrogen 2. If the metal is less reactive than hydrogen, a solid layer of pure metal is produced instead |
| What 2 Things can happen at the Anode when carrying out Electrolysis in Aqueous Solutions? | 1. If (OH⁻ and) halide (halogen) ions are present, the halogen molecule is formed 2. If no halide ions are present, then oxygen is formed |
| What is an Example of the Use of Electrolysis in Real Life? | Purifying Copper probably more |
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