of the environment

Topics

Choose a topic to revise

Sample objectives

What this unit covers

• Water: Explain the chemical tests used to identify water by utilizing anhydrous cobalt(II) chloride and anhydrous copper(II) sulfate.
• Water: Recognize that distilled water is preferred in practical chemistry over tap water due to its lower levels of chemical impurities.
• Air quality and climate: Identify the makeup of clean, dry air, which consists of about 78% nitrogen, 21% oxygen, and the remaining portion as a mix of noble gases and carbon dioxide.
• Air quality and climate: Identify the origins of various air pollutants, including: (a) carbon dioxide from burning carbon-based fuels completely (b) carbon monoxide and particulates from burning carbon-based fuels incompletely (c) methane from decaying plants and animal digestion waste (d) nitrogen oxides from vehicle engines (e) sulfur dioxide from burning fossil fuels containing sulfur compounds.