For example, the brown crust on atoaste d marshmallow is the result of sugar changing to iffer-ent substances in a mixture called caramel. A change in matterthat produces one or more new substances is a chemicalchange, or chemical reaction. The burning of gasoline in acarâs engine is a chemical change.
How much brain power does the average person use? About only 10% Though an alluring idea, the 10 percent myth is so wrong it is almost laughable, says neurologist Barry Gordon at Johns Hopkins School of Medicine in Baltimorâ¦e.
In a way, the myth that we only use 10 percent of our brains is rather inspiring. It may motivate us to try harder to tap into some mysterious, intact reservoir of creativity and potential. There are even products (link is external) that promise on the market promising to unlock that other 90 percent.