Ch. 2 | The Air We Breathe

In this chapter, descriptions are provided on how, by our actions, we humans have altered the composition of the atmosphere. Many of these changes have occurred as a result of industrial processing that is needed to fuel our increasing drive for advanced technology. Here you will find the videos, simulations, and articles for both the 10th Edition and the 2024 Release:

Chapter 2 Opening Video

This video sets the stage for what students will learn about the components of air in Chapter 2.

Components of Air

This video demonstrates a hands-on investigation of the components of air.

Chemtrails

This ACS Reactions video explains why jets leave behing "chemtrails."

States of Matter: Basics

This PhET simulations shows the relationship between volume, pressure, and temperature of a gas.

Concentration Conversions

This video demonstrates relative concentrations.

Caesar's Last Breath

This ACS Reactions video discusses whether people are breathing air molecules that were once exhaled by Caesar.

How Bacteria Make it Rain

This C&EN Speaking of Chemistry video shows how natural aerosol particles originating from the ocean can influence weather patterns.

Deadly Carbon Monoxide

This ACS Reactions video explains why carbon monoxide is so deadly.

Air Pollution Data

Interact with the data in Figure 2.13 to see average levels of air pollutants. 

Air Quality Life Index

Use this interactive data to see how much longer you would live if you breathed clean air.

Balancing Equations

This PhET simulations provides students with additional practice with balancing equations.

Balance a Chemical Equation

This video shows details about balancing chemical equations and limiting reagents.

PM2.5 Composition Trend

This interactive map can be used to answer Your Turn 2.26.

Investigating Air Pollution

This video demonstrates a hand-on investigation of air pollution.

Chapter 2 Opening Video

This video sets the stage for what students will learn about the components of air in Chapter 2.

Chemtrails

This ACS Reactions video explains why jets leave behing "chemtrails."

Components of Air

This video demonstrates a hands-on investigation of the components of air.

Concentration Conversions

This video demonstrates relative concentrations.

Real Talk: Barb Finlayson-Pitts

Check out this interview Barb Finlayson-Pitts.

Deadly Carbon Monoxide

This ACS Reactions video explains why carbon monoxide is so deadly.

Air Quality Trends

An interactive comparison of air pollutants, 1990-2021.

Balancing Equations

This PhET simulations provides students with additional practice with balancing equations.

Balance a Chemical Equation

This video shows details about balancing chemical equations and limiting reagents.

Investigating Air Pollution

This video demonstrates a hand-on investigation of air pollution.

World Air Quality Trends

Real-time air quality data around the world for PM2.5 pollution.

Indoor Air Pollution: Death Rates

Interactive trend for death rates by indoor pollution around the world, 1990-2017.

Indoor Air Pollution: Death Rates by Age

Interactive trend in global death rates by age group, 1990-2019.

Air Quality Related Deaths: Risk Factors

Interactive trend of deaths by risk factor, 1990-2019.

Air Quality Related Deaths: Trends in Global Death Rates

Interactive trends in global death rates.

Real Talk: James Mack

Check out this interview with James Mack, who describes the use of mechanochemistry (pulverization) as a substitute for organic solvents.