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.
To say that we use all of our brain ignores the fact that you couldn't remember where you left your car in the parking garage-even though this is well within your brain potential. You no more use 90% of your brain potential than you use 90% of your muscle potential all of the time.You no more use all of your brain all of the time than you use 100% of your lung capacity sitting at your computer keyboard.uch a statement that We use all of our brain all of the time is a misleading and unhelpful uninspiring skeptical crumbs with barely a grain of truth-As well as not even being accurate statements regarding usage of the human brain. Humans have an unlimited capacity to learn.