Two systems are said to be in chemical equilibrium with each other when their chemical potentials are same. 3) Thermal equilibrium: When the system is in mechanical and chemical equilibrium and there is no spontaneous change in any of its properties, the system is said to be in thermal equilibrium.
While scientists have known for some time that genetics play a role in alcoholism and other addictions, they also understand the tendency to be dependent on alcohol is more complicated than the simple presence or absence of any one gene.
A disease of the brain. For starters, alcoholism is a brain disease. If a person never takes a drink, the brainâs reaction to alcohol never takes place. Therefore, one could argue that the main cause of alcoholism is drinking. But it really isnât that simple. One person drinks without developing the disease, while another gets sick.