Explain why smoke from a burning sofa could fill a room. - Leaving Cert Chemistry - Question c - 2016

Smoke from a burning sofa fills a room due to the process of diffusion and the movement of smoke particles. As the sofa burns, it releases smoke that contains various gaseous compounds and particulates. These smoke particles are lighter than air, allowing them to rise and disperse throughout the room.

Additionally, the heat generated by the fire causes convection currents, which help to circulate the smoke around the room. As a result, the smoke can quickly spread to all corners of the space, lowering visibility and filling the area with potentially harmful substances. This process showcases how smoke can permeate an entire room within a short period, affecting air quality and safety.