level: Redox reactions
Questions and Answers List
level questions: Redox reactions
| Question | Answer |
|---|---|
| What is meant by oxidation? | The chemical reaction in which a substance gains oxygen or loses electrons/Hydrogen |
| What is meant by reduction? | A chemical reaction in which a substance loses oxygen or gains electrons/hydrogen. |
| Give three examples of redox reactions. | Displacement reaction Combustion Metal + Acids |
| Give three ways which can be used to identify if a redox reaction has taken place | Gain and lost of Oxygen Gain and lost of Electrons Changes in oxidation state |
| What color change is seen when Potassium Manganate (VII) oxidises another substance? | Purple to colorless |
| What color change is seen when Potassium Iodide reduces another substance? | Colorless to red brown |