Elements

Hi everyone! Welcome to another post today for science we learned about the elements and how the periodic table works. Before that, we learned about atoms and made some models using the first 10 elements. So for this task, we had to choose an element and then create a poster or we can use a format to write about our chosen element.

If I were a gas element I’d like to be a Krypton and my symbol is Kr.

My atomic number is 36 which means I have 36 protons in my nucleus and 36 electrons around my nucleus. 

At room temperature (20C) I will be a gas. 

My melting point (the temperature when I turn from solid to liquid) is -157.36°C.

 My boiling point (the temperature when I change from liquid to gas) is -153.22°C. 

 

I was first discovered by Sir William Ramsay and Morris M. Travers, Britain, May 30 1898. 

I am found in nature as a gas in the atmosphere, though there is only a little amount found. 

My uses to humans are: 

Flash Photography, Kyprton is used in flash photography. When there is a high temperature explosion, krypton is used to surround the high temperature filament. Krypton was also used as a measurement to determine the length of a meter. It was states that a meter was based on the orange-red spectral line of the krypton isotope 86Kr.

Some interesting things about me are:

Krypton is one of the rarest gases on Earth, it only composes 1 part per million of the Earth's atmosphere (volume). Krypton is a noble gas, which means that they are not able to react to anything and they are also called 'inert gases' for this reason.

Krypton is colourless and odorless and it has an outer shell full of electrons. To get the gas, scientists extract air that has been cooled until it has turned into a liquid. It is then separated, using a process called distillation. 

Credits: https://www.cafepress.com/+periodic_table_krypton_tile_coaster,1389305969