Presentation on theme: "Argon Emma McCloskey. Element Symbol= Ar Atomic Number= 18 Atomic Mass= 39.9 Group on Periodic table= Non-metals."— Presentation transcript:
Argon Emma McCloskey
Element Symbol= Ar Atomic Number= 18 Atomic Mass= 39.9 Group on Periodic table= Non-metals
History Argon was discovered in 1894 by Sir William Ramsay, who was an English chemist. Argon also makes up 93% of the earths atmosphere. Argon is from the greek word argos meaning inactive. Scientists had determined that nitrogen was produced from chemical compounds that where 1% lighter than the atmosphere. Its chemical symbol is Ar
Compounds One compound for argon is Hydride which is used to indicate compounds of the type M x H y. Another compound is a Chloride, a substance formed by chemical union of two or more elements.
Common Uses of Elements One place that you would commonly use Argon is in a light bulb, and also in florescent tubes. Argon can also be used as an inert gas shield for arc cutting.
Appearance in Natural Form Little pieces of Argon are found in the air, the air is also made of Oxygen, Hydrogen, and Nitrogen. This is what Argon looks like.
Physical Properties The Melting Point of Argon is 83.8 K Melting Point is the temperature at which the pressure of the solid and the liquid are the same. The Boiling Point of Argon is 87.3 K Boiling Point is the temperature at which the pressure of a liquid is one atmosphere.
State of Matter Argon is a gas in room temperature. It is in the noble gases on the periodic table.
Chemical Properties Argon is 2 ½ times more soluble in water than nitrogen. It is extremely inert and forms no known chemical compounds