1.4 quantifying acid deposition and monitoring its effects

• qualitative data: a description of a substance of identifying its properties, characteristics, or attributes
• quantitative data: a description of a substance that involves a measurement and a numerical magnitude
• traditional ecological knowledge: the accumulated observations and understanding of the people living with in an area, acquired over many hundred of years through direct contact with the environment
• titration: a technique used to determine the concentration of a substance in a solution by adding measured quantities of another substance that it known to react with until an endpoint is reached
• standard solution: a solution that has a known concentration
• indicator: a substance that undergoes a colour change as a response to a change in the pH
• burette: specialized glassware that is graduated to measure the volume of a standardized solution added to a test solution during a titration
• Erlenmeyer flask: conical-shaped flask in which the test solution and indicator are placed during a titration
• endpoint: the point in a titration where the indicator changes colour. the endpoint signals the addition of enough standard solution to completely neutralize the reactant in the test solution
• pH meter: a device used to measure pH based on conductivity as determined by concentration of hydronium ions