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.
The bubbles are of hydrogen gas which is formed by the acid pulling electrons off of the metal. The chemical change is H + in the acid becoming H 2 gas and the iron (Fe) in the gun becomes an ion (Fe 3+) and when dries, becomes an salt of iron. The bubbles seen when boiling water is not a chemical change. That's a physical change.