Exothermic Reaction

Lighters, lighters are a very simple form of an Exothermic reaction. Lighters ignite the fuel in them then they produce flames out the exhaust of the tool. This is an Exothermic reaction the chemicals final energy is less than its starting energy and the difference has been adding to the surroundings as light and heat. Butane is a highly flammable, colorless, easily liquefied gas used in cigarette lighters. Napatha or white gas, a volatile flammable liquid hydrocarbon mixture used in wick type lighters. Depending on the fuel in the lighters, the final reaction may vary.

Polyvinyl Chloride (PVC)

Polyvinyl Chloride or PVC is the modern day material that is used to make most Christmas Trees. PVC is a cheap material to make consisting of a lot of vinyl chloride molecules linked together to form polymer. PVC comes in the form of white power but is compounded into a solid. To make the substance more flexible, they add phthalates. They also add to it, Bisphenol A (BPA) and chloride. PVC is made to use pipes, pipe fittings, pipe conduits, vinyl flooring, and vinyl siding. It is used to make wire and cable coatings, packaging materials, wrapping film, gutters, downspouts, door and window frames, gaskets, electrical insulation, hoses, sealant liners, paper and textile finishes, thin sheeting, roof membranes, swimming pool liners, weatherstripping, flashing, molding, irrigation systems, containers, and automotive parts, tops, and floor mats. PVC does not come from nature, instead to make all of those things they have to take ingredients from nature to make it. When phthalates is added to PVC it can be used to make medical devices such as blood bags, blood and respiratory tubing, feeding tubes, catheters, parts of dialysis devices, and heart bypass tubing. Phthalates are used in PVC plastics such as garden hoses, inflatable recreational toys, and other toys. Consumer products made with PVC include raincoats, toys, shoe soles, shades and blinds, seat covers, shower curtains, furniture, carpet backing, plastic bags, and credit cards. 

Fred Barningham "PVC, What is it?" January 8, 2011 http://commons.m.wikimedia.org/wiki/File:Polyvinylchloride-repeat-2D-flat.png

http://toxtown.nlm.nih.gov/text_version/chemicals.php?id=84

http://mentalfloss.com/article/20373/christmas-tree-fads-and-fashions

Car Safety

Car safety is very important. There are many different types of car safeties that protect us in case of an accident. Drivers in the United States put more than 2,969 billion miles on their tires, but most drivers don't get their tires changed because their too expensive. 11,000 tire related accidents happen a year and around 200 people die in those accidents. For 30 years the NHTSA (National Highway Traffic Safety Administration) and the Department of Transportation have tried to make cars more safe and roads more safe to prevent less crashes. They've been improving seat belts, airbags, car sensors, etc. They've lowered the number of car crashes and deaths by car crashes immensely and is still dropping. Frontal airbags have saved 25,782 lives from 1987-2008. They've recommended that children under the age of 12 should sit in the back seat. Frontal air bags can do more harm than protect small children. Car companies run many different test over and over until they've gotten it right. There are many different things that add up to saving someone's life in a car crash, these are just a few examples.

http://www.safercar.gov

Types of Bloody Noses

  Bloody noses happen in a lot of ways. They can just start for some reason, you can bump into a wall, fall on your face, or just get flat out punched in the face. I tend to get nosebleeds just right out of the blue for no reason. I've always been prone to nosebleeds, ever since I was born. It happens to a lot of people, nosebleeds just start for no reason. You could be getting a coffee, be in a meeting, watching TV. It a very genetic thing but can also be picked up along the way. But there are treatments for such no bleeds and no bleeds of all kinds.

Types of Nose Bleeds

     Most of the time blood vessels in your nose start to get dry and or cold and crack. Once they crack the blood comes out through your nose. There are two types of nose bleeds, the first are anterior nosebleeds, anterior make up more than 90% of all nosebleeds. The bleeding usually comes from a blood vessel at the very front part of the nose. Anterior nosebleeds are usually easy to control, either by measures that can be performed at home or by a doctor. Then there is posterior nosebleeds, posterior nosebleeds are much less common than anterior nosebleeds. They tend to occur more often to elderly people. The bleeding usually comes from an artery in the back part of the nose. These nosebleeds are more complicated and usually require a trip to the hospital and help by an otolaryngologist, or an an ear, nose, and throat specialist (ENT). Nosebleeds tend to occur during winter months and in dry, cold climates. They can occur at any age but are most common in children aged 2 to 10 years old and adults aged 50 to 80 years old.