Involves measuring the mass of a product. For example, precipitating a solid out of a solution and weighing it to calculate the original concentration of an element.
These use the interaction of light with matter. Tools like UV-Vis or Atomic Absorption spectroscopy measure how much light a sample absorbs to determine its concentration. Quantitative Chemical Analysis
Converting the sample into a form suitable for measurement (e.g., dissolving a solid into a liquid). Involves measuring the mass of a product
"Quantitative Chemical Analysis" is the process of determining the (the amount) of one, several, or all particular substances present in a sample. While qualitative analysis tells you what is in a sample, quantitative analysis tells you how much . Quantitative Chemical Analysis