Why is burning gasoline a chemical change? is it because burning is a chemical change and it is changing into a different substance?

How is the atomic number of a nucleus changed by alpha decay

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c