Have you ever wondered what the air we breathe is made of, or why sometimes the environment gets polluted? This chapter on Environmental Chemistry will help you understand these things in a simple way. It’s all about the air around us, the problems caused by pollution, and how humans affect the planet.
In this chapter, you will learn:
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What the atmosphere is made of and why it’s important for life.
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Different types of air pollutants and how they can harm us and the environment.
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How acid rain forms and what damage it can do.
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What global warming is and why it is a problem for the Earth.
By learning this, you’ll understand how we can take care of our environment and make the world a healthier place to live
📥 Download Environmental Chemistry Notes – 9th Class
Skip to PDF contentStudents can download the complete Environmental Chemistry notes for 9th class in PDF format for easy revision and study. The notes cover:
- Composition of Atmosphere
- Air Pollutants
- Acid Rain
- Global Warming
⬇ Download Chapter 9 Notes (PDF)
Frequently Asked Questions (FAQs)
Q1: What is Environmental Chemistry?
A: Environmental Chemistry is the study of chemicals in the environment, how they interact, and how human activities affect the air, water, and soil.
Q2: What is the composition of the atmosphere?
A: The atmosphere is mainly made up of Nitrogen (78%), Oxygen (21%), and small amounts of Carbon Dioxide, Argon, and other gases. These gases are essential for life and climate balance.
Q3: What are air pollutants?
A: Air pollutants are harmful substances in the air, like smoke, dust, car exhaust gases, and industrial emissions, that can harm humans, animals, and plants.
Q4: What is acid rain?
A: Acid rain forms when sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) mix with rainwater, creating acidic water that damages plants, water bodies, and buildings.
Q5: What is global warming?
A: Global warming is the gradual increase in Earth’s temperature due to greenhouse gases like CO₂ and methane, which trap heat in the atmosphere.