Just a different word for carbohydrates, the stuff you find in bread and potatoes and pasta, which your body converts to glucose for energy. The words 'carbs' and 'carbohydrates' are very popular...
Precipitate is the now insoluble part formed when two chemicals react. Usually a solid, but if the fluid were dense, it may not settle. It could be a colloid. If you added NaCl solution to a AgNO3...