According to various bullying studies, many teens and children act out violently on their peers through acts of bullying because they are abused at home. Other bullying statistics: 1  Over half, about 56 percent, of all students have witnesses a bullying crime take place while at school. 2  A reported 15 percent of all students who donât show up for school report it to being out of fear of being bullied while at school.
By Anne Marie Helmenstine, Ph.D. A compound is a chemical substance made up of two or more elements. Here is a list of examples of compounds made up of exactly two elements. 1  H 2 O-water. 2  NaCl-sodium chloride or table salt. 3  KCl-potassium chloride. 4  HCl-hydrochloric acid. 5  N 2 O-nitrous oxide. 6  AgI-silver iodide. 7  AlN-aluminum nitride.
A substance can be defined as homogeneous if it contains only one kind of compound or one element. Homogeneous is Latin for the same kind. An example of a homogeneous substance would be pure silicon, which contains only silicon atoms. Other examples are pure water, which contains only the compound H2O, or pure table salt, which contains only the compound NaCl.