Learn about the education and preparation needed to become a sales associate. Get a quick view of the requirements and details about schooling, job duties and training necessary to find out if this is the career for you. Sales Associate: Job Description, Requirements and Career Information.
Burning natural gas is exothermic. An exothermic process releases heat, causing the temperature of the surrounding area to rise. Burning gas releases heat and warms whatever is around it, so it's exothermic. An endothermic process absorbs heat and cools the surrounding area.
Any burning is a chemical change. When gasoline (mostly a hydrocarbon called octane) burns, or combusts, it reacts with oxygen in the air to produce water vapor, carbon dioxidâ¦e, and a bunch of heat energy, which your lawn mower engine harnesses to do work (turn the blade.)