Iron reacts with oxygen in a chemical hand-warmer. how should this reaction be categorized?
as an exothermic process because it releases heat
as an endothermic process because it releases heat
as an exothermic process because it absorbs heat
as an endothermic process because it absorbs heat

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

2. how is heavy water different from normal water

Compare and contrast the bohr model and the electron cloud models of the atom.