Greencastle-Antrim School District proudly puts Children First, and that philosophy guides every decision and every action across the district. Our children represent the future of our community, and we work hard to live up to our mission to create and provide opportunities for all students to become lifelong learners and productive citizens.
The two types of high explosives are Primary explosives, which are easily ignited or detonated and are very sensitive to heat and friction, and Secondary explosives, which are usually much less sensitive to heat and friction and they typically have to be ignited through the use of other explosive materials.
A material's autoignition or ignition temperature is the temperature at which a material self-ignites without any obvious sources of ignition, such as a spark or flame. Most common flammable and combustible liquids have autoignition temperatures in the range of 300Â°C (572Â°F) to 550Â°C (1022Â°F).t is the mixture of their vapours and air that burns. Gasoline, with a flashpoint of -40Â°C (-40Â°F), is a flammable liquid. Even at temperatures as low as -40Â°C (-40Â°F), it gives off enough vapour to form a burnable mixture in air. Phenol is a combustible liquid.