There are a few that appear to be mildly effective. This includes Caffeine, Green Tea and Glucomannan (a fiber that can reduce appetite). However, the results are usually weak and inconsistent and certainly nothing to get excited about.
The Chemical Reactions chapter of this College-Level General Chemistry Homework Help course helps students complete their chemical reactions homework and earn better grades. This homework help resource uses simple and .
A chemical reaction is a process in which one or more substances are converted to one or more different substances. In the reaction, the atoms of the starting substances are rearranged, forming new substances that have different properties.
Chemical reactions change one or more types of substances into completely different substances with different physical and chemical properties from the components that existed before the reaction. For example, a shiny copper wire exposed to air will eventually rust, because the oxygen in the air will combine with copper to form copper . Chemical Reactions: Homework Help Chapter Exam Instructions Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions .
Evidence of Chemical Reactions. Some chemical changes cannot be directly observed and must be detected through specialized tests. However, some chemical changes are readily apparent, producing changes in color or other observable signs. For example, heating a mixture of iron, which is gray, and sulfur, which is yellow, causes a reaction . Know All About Chemical Reaction with Our Help. If you are thinking how to avoid the pressure of the homework, you do not have to spend more time on this topic because .