Rate of Reaction

• Rate of reaction = change in amount of substance / time taken
• In order for a reaction to occur, the two reacting species must collide with sufficient energy
• A catalyst increases the rate of reaction by providing an alternative route for the reaction with a lower activation energy
• Marble chips - CaCO3
• Decomposition - a reaction where a reactant breaks down to form simpler substances
• A covalent bond - electrostatic attraction between a pair of nuclei and one or more shared pairs of electrons
• Isomers - molecules with the same molecular formula, but different structures
• intermolecular forces are the attractive forces between molecules
• When a species loses one or more electrons, this is referred to as oxidation
• When a species gains one or more electrons this is referred to as reduction
• Redox is when reduction and oxidation happen at the same tim