EVERYDAY SCIENCE

Detailed explanation-1: -Wood burning is a chemical change when new materials are created that cannot be removed (e.g. carbon dioxide). For example, if a fireplace burns wood, there is no longer wood but ash. Certain examples include candle burning, iron rusting, cake baking, etc.

Detailed explanation-2: -When wood is set on fire, the Carbon present in the form of Methane or butane combusts in the presence of Oxygen to form water and Carbon dioxide. The burning of wood is a chemical change as it leads to the formation of new substances like Carbon dioxide gas, water vapour, ash, etc.

Detailed explanation-3: -Wood has the chemical property of flammability-the ability to burn. A substance that does not burn, such as gold, has the chemical property of nonflamma-bility. Other common chemical properties include reactivity with oxygen, reactivity with acid, and reactivity with water.

Detailed explanation-4: -When wood is burned, there is the production of carbon dioxide, water vapour and ash. It is a chemical reaction.

Detailed explanation-5: -(b) When wood is lit up, it burns gently and after a while, it turns into ashes. As it burns, it produces heat, light and smoke which escapes through the chimney. The heat, light, fire and smoke are all good characteristics of a chemical reaction, which result in a completely new matter-ash.