Chemistry is the study of

List four observations that indicate that a chemical reaction may be taking place

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.