GCIDE(0.00 / 0 votes)Rate this definition: recuse(v. i.) To withdraw oneself from serving as a judge or other decision-maker in order to avoid a real or apparent conflict of interest; -- often used with the reflexive; as, the judge recused himself due to a financial interest in the matter.
When hydrogen peroxide bubbles, it is undergoing a chemical change. Which statement best describes what is happening? The atoms in hydrogen peroxide are breaking apart and forming new types of molecules. Four students are analyzing four different substances and recording their findings in this table.
As the molecules jostle each other, a few get to higher than average energy (and some to lower, keeping the average) and can get over the hump. Thus paper will slowly oxidize (go brown) and hydrogen peroxide will slowly decompose (building up a pressure of oxygen gas if the container does not have a vent or pressure release). However if you raise the temperature so that enough molecules have more energy than the activation energy then the reaction will proceed, and the heat released will activate more molecules.