EVERYDAY SCIENCE

Detailed explanation-1: -A campfire is a chemical reaction called combustion.

Detailed explanation-2: -When wood catches fire and turns into ash letting off lots of smoke, this is a chemical change.

Detailed explanation-3: -The flame of the fire is actually an indication of a chemical reaction. Fire is a particular type of chemical reaction in which the atoms in a fuel (the material that burns) react with oxygen. The reaction produces different molecules, such as carbon dioxide and water, and releases energy in the form of light and heat.

Detailed explanation-4: -Cutting wood for a campfire is NOT a chemical change, it is a physical change. No matter how small the wood pieces are cut, the chemical makeup remains the same. As our campfire combusts, the wood will blacken and turn to ash. The wood is made of long chains of carbon and hydrogen.

Detailed explanation-5: -Fire is the visible effect of the process of combustion – a special type of chemical reaction. It occurs between oxygen in the air and some sort of fuel. The products from the chemical reaction are completely different from the starting material.