Chemically compulsory 2ndChemical energyAndElectrical
In our daily lives, the appliances that we use hide an important energy turn
Switching processes: chemistry can undergo a series of reactions and eventually become a power available to people。
This process is not a mysterious scientific product, but a result of chemical and physical interaction. Rice
It helps us understand why batteries work
Why power reserves are important and possible directions for future energy systems。
I. What is chemical energy? Why is it converted to electrical energy
Chemistry can come from inside the molecule. The energy stored in different chemicals is different
When a chemical key breaks and a new key is formed, the energy of the system changes. Sometimes it's big
The amount of energy that sometimes needs to be absorbed. Whether burning wood releases heat or corrosive
Metals generate ion, which essentially transforms chemical energy from molecules into heat, light
Processes such as mechanical energy。
And in the electrochemical scene, some of the energy of chemical energy is transferred by electronics
Electricity. Electronics are released from a position (usually a negative pole) through the outside circuit
Return to another position (usually positive poles), where electrical energy is carried
Take him away
Be the power we can use. In short, chemistry provides the power to drive electronic motion
Power, the process of taking electrons away from the outside circuit turns chemical energy into electrical energy。
IiOriginal batteryOf the united nations
To understand the source of electricity, you need to understand the original battery
Galvanic cell
(c) composition and working methods. An original battery usually consists of two metal electrodes and
A solution with an electrolyte containing an ion is made up of an external guidance line that connects two poles
There may also be a salt bridge to balance the ion charge in the solution. At the negative level, it happens all the time
The oxidation reaction, i. E. The loss of electron by the metal; at the positive polar level, the ion gets electron and is restored. Electricity
Subs flow from negative poles to positive poles through external circuits, forming currents. We'll move electrons and ions
