Many chemical reactions can be reversed. When this happens we can describe a forward reaction and a back reaction. Sometimes the forward and back reaction take place at equal rates. When this happens an Equilibrium is established Students should: 3.17 know that some reactions are reversible and this is indicated by the symbo...
3.1 Energetics Students should: 3.1 know that chemical reactions in which heat energy is given out are described asexothermic, and those in which heat energy is taken in are described as endothermic Every chemical reaction has an accompanying change in energy. Some reactions release energy to the surroundings and are known as Exothermic...
To test the effect of particle size on the rate of oxidation we prepared three samples of steel wool each with different levels of coarseness (shown left). The test tube on the left contains the fine steel wool while the one in the middle contains the medium conciseness steel wool and the test tube on the right contains the coarsest stee...