A fundamental difference between compounds containing ionic bonds and those containing covalent bonds is the existence of molecules. Explain why molecules exist in solid covalent compounds but do not exist in solid ionic compounds.

Numbers and Arithmetic Two types of numbers delt with in chemistry and other sciences. Ex. 69 students vs. 69 feet, the difference is that the students are an exact number and 69 feet is a measured number. Exact vs. Measure 1. Exact numbers a. Numbers that are exactly known b. Defined numbers within...