For a reaction to occur, the reactants must have enough energy to overcome a barrier so as to reach the transition state and consequently form products (Fig. 1). The reactants all possess ...

The atom economy of a chemical reaction is a measure of the percentage of reactants that become useful products. Inefficient, wasteful processes have low atom economies. Efficient processes have ...

Students explore the concept that chemical reactions involve the breaking of bonds between atoms in the reactants, and the rearrangement and rebonding of these atoms to make the products. Students ...

Available catalysts can be homogeneous, which means that they possess the same phase as the reactants and products, making ...

The combustion of methane is an example of an exothermic reaction. More energy is released when the bonds in the products are formed than is used to break the bonds of the reactants. This is shown by ...

The activation energy barrier separates reactants from products. The top of the barrier is the transition state. Putting the right amount of energy into the reaction allows the reactants to surmount ...

As one mole of every gas will occupy the same volume at a given temperature and pressure, we can use volumes and the molar ratio to calculate volumes of reactants or products. Consider the ...

Available catalysts can be homogeneous, which means that they possess the same phase as the reactants and products, making them difficult to separate from the reaction mixture. On the other hand ...