If a reaction requires a constant input of energy, the products are higher in energy than the reactants. This type of reaction is known as endothermic, since it involves an increase in energy of the system. Conversely, reactions that release energy are known as exothermic.
Best Answer: The length of a semester varies per institution. For most colleges/universities, a typical Fall or Spring semester is between 14 and 16 weeks.Summer terms are shorter and more varied; some courses last 3 or 4 weeks whereas others might last 10 or 12 weeks.Source(s): college instructor.or most colleges/universities, a typical Fall or Spring semester is between 14 and 16 weeks. Summer terms are shorter and more varied; some courses last 3 or 4 weeks whereas others might last 10 or 12 weeks. Source(s): college instructor.
Normal Class Load and Maximum Load. The regular college year is composed of two semesters. Each semester consists of 16 weeks. A full-time student is one who carries 12 or more semester hours of work for the semester. At least 16 semester hours each semester are generally required if the student plans to complete a degree in the usual two or four-year time period.