The first 20 on the Periodic Table

http://www.youtube.com/watch?v=cAnOUwPfHlk

Atomic Number – 1Symbol – HAtomic Mass – 1.01

Interesting Facts- Gas at room temperature- Most abundant element in the universe- Found in water and most organic compounds

Atomic Number – 2Symbol – HeAtomic Mass – 4.00

Interesting Facts- non-reactive, non-toxic gas- less dense than air, which is why it makes your voice sound like a chipmunk when inhaled.

Atomic Number – 3Symbol – LiAtomic Mass – 6.94

Interesting Facts- It is the lightest metal- Will react with water as it is an alkali metal

Atomic Number – 4Symbol – BeAtomic Mass – 9.01

Interesting Facts- Used in windshield frames, brake discs, support beams, and other components of space aircrafts. - The most important use for beryllium is nuclear reactors and computer parts.- An alkali-earth metal

Atomic Number – 5Symbol – BAtomic Mass – 10.81

Interesting Facts- A metalloid that is Used in making calculators and computers- The name originates from the words “borax” and “carbon”- Is found in our bones and tissues in tiny amounts

Atomic Number – 6Symbol - CAtomic Mass – 12.01

Interesting Facts- A non-metal that is an extremely abundant element on Earth- Most commonly obtained throughout history from coal- Diamond is a naturally occurring form of Carbon- The human body contains a lot of carbon, and requires carbon for every stage of development

Atomic Number – 7Symbol – NAtomic Mass – 14.01

Interesting Facts- Most abundant element found in air (78%)- Nitrogen compounds are found in foods, fertilizers, poisons, and explosives. Your body is 3% nitrogen by weight.

Atomic Number – 8Symbol – OAtomic Mass – 16.00

Interesting Facts- A gas that makes up 21% of Air - Plants and animals require oxygen for respiration- Required for combustion- Ozone is made up of 3 oxygen atoms (O3)

Atomic Number – 9Symbol – FAtomic Mass – 19.00

Interesting Facts- A highly poisonous and very reactive gas- Used in refrigerators, air conditioning units and insecticides- An ion of fluorine (one extra electron) is called fluoride and is used in toothpaste and added to drinking water

Atomic Number –10Symbol - NeAtomic Mass – 20.18

Interesting Facts- A stable non-reactive gas- Produces a red glow in a vaccuum tube

Atomic Number – 11Symbol - NaAtomic Mass – 22.99

Interesting Facts- A highly reactive silvery white alkali metal-When chemically bonded with chlorine it forms sodium chloride – aka. Table salt- Explodes when put in contact with water

Atomic Number – 12Symbol – MgAtomic Mass – 24.31

Interesting Facts- An alkali earth metal -Used in missiles, flares and fireworks- Magnesium is important for strong bones, a healthy immune system, a sound nervous system, and for muscle contractions

Atomic Number – 13Symbol – AlAtomic Mass – 26.98

Interesting Facts- A very useful metal because it can be easily formed into various shapes- 29 million tons of Aluminum are required every year to meet global demand. Of this 22 million tons is new aluminum and 7 million tons is recycled. - The average lifespan of an aluminum beverage can is six weeks, including the time it takes to be manufactured, filled, sold, recycled and remanufactured.

Atomic Number – 14Symbol – SiAtomic Mass – 28.09

Interesting Facts- A non-metal that is found naturally in the earth’s crust- In the form of sand and clay it is used to make brick and concrete

Atomic Number –15Symbol – PAtomic Mass – 30.97

Interesting Facts- A non-metal that is a very important element in the human body- 85% of phosphorus in our bodies are in our bones and in our teeth- Important in many chemical reactions in our bodies

Atomic Number – 16Symbol – SAtomic Mass – 32.07

Interesting Facts - A non-metal that is found naturally in many foods- Occurs naturally in the environment – mainly in the Earth’s crust- An essential nutrient for plants - agriculture

Atomic Number – 17Symbol – ClAtomic Mass – 35.45

Interesting Facts- Poisonous in gas form – toxic to humans in large amounts- In liquid form it is found in some cleaning products- Used in WWI as a gas that choked and killed people- Used in small amounts to kill bacteria in pools

Atomic Number – 18Symbol – ArAtomic Mass – 39.95

Interesting Facts- A colourless, odourless gas- Makes up 0.93% of the Earth’s Atmosphere- A noble gas – making it very stable (unreacitive)

Atomic Number – 19Symbol – KAtomic Mass – 39.10

Interesting Facts- A soft silvery-white alkali metal - Essential for energy metabolism in the human body- Banana’s are a great source of potassium and prevent cramping during athletic activities

Atomic Number – 20Symbol – CaAtomic Mass – 40.08

Interesting Facts- A soft grey alkali-earth metal - Essential for human nutrition- Essential to keep the human skeleton strong, egg shells hard and plants rigid

Memorize all 20 for Quiz next Class….