AP BIOLOGY

Detailed explanation-1: -Due to diffusion, smoke molecules leave the chimney and spreads in the atmosphere. Overall a diffusion process is seen in it as smoke particles diffuse into air particles.

Detailed explanation-2: -Chimneys operate based on the principle that hot air is less dense than cold air, and thus rises. When a chimney is filled with hot smoke or other gases, these gases rise up through the chimney. The hot, rising gas creates a pressure difference known as a draft which pulls combustion gases out of the building.

Detailed explanation-3: -A partially-closed damper will cause fireplace smoke to enter your home. If this doesn’t help, there may be an obstruction near the top of your chimney, or your chimney flue could be damaged. Contact a fireplace professional to inspect your chimney and resolve any issues.

Detailed explanation-4: -When you light a fire in your fireplace, you know the smoke is supposed to flow up and out of your chimney. One of the most common chimney problems is the failure of the chimney to draft properly, causing smoke to flow backward into the home.

Detailed explanation-5: -It consists of carbon particles, acids, chemicals, metals and some dust. A fire with low oxygen or damp wood is more likely to generate more smoke. This smoke contains harmful particles which, together with the contained water vapour, form soot.