Question

When do scrapings burn with extreme rapidity?

1) When exposed to high temperatures
2) When mixed with flammable substances
3) When in contact with oxygen
4) When subjected to friction or impact

Answer 1

Scrapings burn with extreme rapidity when exposed to high temperatures, when mixed with flammable substances, and when in contact with oxygen. Additionally, friction or impact can also cause scrapings to burn rapidly.

Step-by-step explanation:

Scrapings burn with extreme rapidity when exposed to high temperatures, when mixed with flammable substances, and when in contact with oxygen. High temperatures provide the activation energy needed for the reaction to occur, while flammable substances can act as fuel to enhance the combustion process. Additionally, oxygen is necessary for combustion to take place. When scrapings are subjected to friction or impact, it can create heat, potentially leading to ignition and rapid burning. For example, when paper is heated by a flame, it reaches a point where the molecules have enough energy to react, resulting in rapid burning.