#18 - Atmospheric Gases

Written By Tom Gordon

Edexcel IGCSE Chemistry - The Companion Audio Guide

Explore atmospheric gases: air is 78% nitrogen, 21% oxygen, and contains trace gases like argon and carbon dioxide. Combustion and decomposition reactions show oxygen’s role in forming oxides. Carbon dioxide, a greenhouse gas, contributes to climate change by trapping heat in the atmosphere.

Tom Gordon
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#17 - Group 7 Elements