Quantities, Units and Symbols in Physical Chemistry

In physical chemistry, quantities, units, and symbols are fundamental concepts that are used to describe and quantify physical properties and behaviors of matter. Here’s a breakdown of each: ### 1. Quantities Quantities represent physical properties that can be measured or calculated in a physical or chemical context. They can be classified into two main types: - **Scalar Quantities**: These quantities are defined by only a magnitude (numerical value) and have no direction.