- published: 01 May 2016
- views: 36360532
Fire is the rapid oxidation of a material in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. Slower oxidative processes like rusting or digestion are not included by this definition.
Fire is hot because conversion of the weak double bond in molecular oxygen, O2, to the stronger bonds in the combustion products carbon dioxide and water releases energy (418 kJ per 32 g of O2); the bond energies of the fuel play only a minor role here. At a certain point in the combustion reaction, called the ignition point, flames are produced. The flame is the visible portion of the fire. Flames consist primarily of carbon dioxide, water vapor, oxygen and nitrogen. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire's intensity will be different.
Fire in its most common form can result in conflagration, which has the potential to cause physical damage through burning. Fire is an important process that affects ecological systems around the globe. The positive effects of fire include stimulating growth and maintaining various ecological systems. Fire has been used by humans for cooking, generating heat, light, signaling, and propulsion purposes. The negative effects of fire include hazard to life and property, atmospheric pollution, and water contamination. If fire removes protective vegetation, heavy rainfall may lead to an increase in soil erosion by water. Also, when vegetation is burned, the nitrogen it contains is released into the atmosphere, unlike elements such as potassium and phosphorus which remain in the ash and are quickly recycled into the soil. This loss of nitrogen caused by a fire produces a long-term reduction in the fertility of the soil, which only slowly recovers as nitrogen is "fixed" from the atmosphere by lightning and by leguminous plants such as clover.
Patrick may refer to:
We’ve been friends
For so long I dread our days apart
They consume me like a spell from a broken wand
Just spit it out
Well you know I’ve never been much good with words
Actions always been far easier
So kiss me hard
Before I change my mind
Or I think better of it
I’ve wanted you for so long
Wanted you to be the one that does it
Oh, Hermione Granger, don’t you think about him
Put down Hogwarts, A History
And sit down by the fire
Come, let’s make a fire
It’s okay
Meet me by the lake and we can talk
I could listen for hours just to watch your mouth
I’m not the only one who feels this way
But every time I touch your hand I think,
“Today I’ll take a stand”
So kiss me hard
Before I change my mind
Or I’ll think better of it
I’ve wanted you for so long
Wanted you to be the one that does it
Oh, Hermione Granger, don’t you think about him
Put down Hogwarts, A History
And sit down by the fire