Question

What are flammable and nonflammable substances? give two examples of each.

Answer 1

Hint:Flammable materials are those that catch fire readily. For example, wood, kerosene etc. Non- Flammable materials are those that do not catch fire. For example, glass, steel.

Step by step solution
Flammable substances: Flammable applies to combustible materials that ignite easily and thus are more dangerous and more highly regulated. Flammable solids are solids that are readily combustible, or may cause or contribute to fire through friction. Readily combustible solids are powdered, granular, or pasty substances that easily ignite by brief contact with an ignition source, such as a burning match, and spread flame rapidly. The technical definitions vary between countries so the United Nations created the Globally Harmonized System of Classification and Labelling of Chemicals, which defines the flash point temperature of flammable liquids as between 0 and 140 °F (60 °C) and combustible liquids between 140 °F (60 °C) and 200 °F (93 °C).

Non flammable substances: substances which cannot ignite it in air with a match or similar source of heat, then most of the material around you would be non-flammable: water, nitrogen, brick, glass, blocks of common metals, and more especially precious metals. However, if you mean that it cannot be lit even by changing their state or applying special sources of heat in air or oxygen, many such substances can be ignited; for example, heat aluminium or magnesium violently enough and they will burn fiercely, and almost any metal in the form of fine dust can burn explosively if puffed into the air.

Note:Flammability is the ease with which a combustible substance can be ignited, causing fire or combustion or even an explosion. The degree of difficulty required to cause the combustion of a substance is quantified through fire testing. Internationally, a variety of test protocols exist to quantify flammability. The ratings achieved are used in building codes, insurance requirements, fire codes and other regulations governing the use of building materials as well as the storage and handling of highly flammable substances inside and outside of structures and in surface and air transportation. For instance, changing an occupancy by altering the flammability of the contents requires the owner of a building to apply for a building permit to make sure that the overall fire protection design basis of the facility can take the change into account