2. Atomic Number Atomic Mass

4. Group Number Period: 2 Family Name: The pnictogens Non-Metal

5. Other Basic Nitrogen Information Density: 1026 kg m -3 Liquid: 0.808 g/cm 3 @ -195.8 °C solid 1.026 g/cm 3 @ -252 °C Stable Isotopes: 14 N and 15 N Physical State at Room Temperature: Gas Radioactive Isotopes: There are 14 Nitrogen came from the Greek words "nitron genes" meaning "nitre" and "forming"

6. The Discovery! Daniel Rutherford Edinburg University In 1772

7. Well, look around you… Well, look around you… It is colorless, odorless gas What does Nitrogen Look like?

8. Nitrogen is found in the air and is the most important element of the earths atmosphere. Earth's atmosphere is 78% nitrogen, so it is the most common found element on earth. Nitrogen is found in all living systems as part of the makeup of biological compounds. Therefore, you can easily find it throughout the earth.

11. On April 17, 1995 a pick up truck exploded in the street in front of the Alfred P. Murrah federal building, in Oklahoma City. This event is know today as the Oklahoma City bombing. In the truck was an ammonium nitrate bomb, 4,800 pounds of ammonium nitrate and fuel oil from twenty plastic drums. The Oklahoma blast claimed 168 lives, including 19 children under the age of 6 and injured more than 680 people

12. Nitrogen is an essential macronutrient needed by all plants to thrive. It is an important component of many structural, genetic and metabolic compounds in plant cells. It is also one of the basic components of chlorophyll, which plants use sunlight to produce sugars during the process of photosynthesis. Increasing the levels of nitrogen during the vegetative stage can strengthen and support the roots, enabling plants to take in more water and nutrients. This allows a plant to grow more rapidly and produce large amounts of succulent, which in turn can generate bigger fields, tastier vegetables, and a crop that is more resistant to pests, diseases, and other adverse conditions. Nitrogen is an essential macronutrient needed by all plants to thrive. It is an important component of many structural, genetic and metabolic compounds in plant cells. It is also one of the basic components of chlorophyll, which plants use sunlight to produce sugars during the process of photosynthesis. Increasing the levels of nitrogen during the vegetative stage can strengthen and support the roots, enabling plants to take in more water and nutrients. This allows a plant to grow more rapidly and produce large amounts of succulent, which in turn can generate bigger fields, tastier vegetables, and a crop that is more resistant to pests, diseases, and other adverse conditions.

13. Too much nitrogen, however, can be just as harmful to plants as too little can be. When there are high levels of nitrogen, plants may not produce flowers or fruit. Nitrogen deficiency can lead to yellow leaves or allow them to fall off. Too much nitrogen can result in plant burning, which causes them to shrivel and die.

14. What Is Nitrogen Used For? Nitrogen can be used to protect historic documents such as the Declaration of Independence. By keeping important documents in air-tight containers filled with nitrogen gas, the documents are protected from oxygen and other gases. The paper and ink in the document would react with oxygen in the air and begin to decay if not kept enclosed.

15. Other Uses For Nitrogen to preserve packaged foods by stopping the oxidation of food Light bulbs may contain nitrogen as a cheaper alternative to argon. Nitrogen gas is often used on top of liquid explosive to keep them from exploding! Nitrogen is used to produce many electrical parts such as transistors, diodes and integrated circuits. When dried and pressurized, nitrogen gas is used as a dielectric gas for high voltage equipment. Used to manufacture stainless steel. Used to reduce the fire hazard in military aircraft fuel systems. Nitrogen gas is used to fill the tires of aircraft and automobiles. However, commercially sold cars just use normal air. Nitrogen tanks are gradually replacing carbon dioxide tanks as the power source of paintball guns. It can also be used as an alternative to carbon dioxide in pressurizing beer. Liquid nitrogen is used to preserve blood, sperm and egg and other biological samples. It is also used to cool X-ray detectors and central processing units in computers when they are hot. Nitrogen is a component of nearly every pharmacological drug. Laughing gas (nitrous oxide) can be used as an anesthetic.

16. USES: Freezing and transport of food products. Cryopreservation of biological samples. Coolant for superconductors, vacuum pumps, and other materials and equipment. Cryotherapy to remove skin abnormalities. Shielding materials from oxygen exposure. Cooling materials for easier machining or fracturing. Making Ice cream! is nitrogen in a liquid state at an extremely low temperature

17. http://www.youtube.co m/watch?v=XvazQUYG1 kE