Give two examples, other than enzymes, where catalysts are used.

palladium - If you light a match in a room with hydrogen gas and oxygen gas, there will be an explosion and most of the hydrogen and oxygen will combine to create water molecules.

iron - When making ammonia, iron is a helpful catalyst.

B) Go outside on a windy day and you can feel the power of the energy of the future. Wind energy is created by using large wind turbines which changes the energy from the wind into electricity to power our homes and workplaces. Wind power is available every day of the year, rain or shine. A large fan, called a wind turbine, is made up of a blade, a rotor, a drive train, a tower, and other things like electrical wires.

Explanation: