Molecule

tlsharlene's picture

Pyrite Molecule

Submitted by tlsharlene on Tue, 19/07/2016 - 13:26

This is a molecule of pyrite.

jhung23's picture

Aluminium Chloride Molecule

Submitted by jhung23 on Tue, 19/07/2016 - 13:26
Aluminium Chloride

 

 

Atoms are the smallest particle of an element and are the basic building blocks of all matter. Atoms are composed of a nucleus which contain positively charged particles called protons and no charged particles called neutrons. Surrounding the nucleus are negatively charged electrons arranged in shells. These electrons exist in a cloud around the nucleus. When two electron clouds of different atoms interact, they bind together to form a molecule. An example of a molecular compound (a molecule that contains atleast two or more different elements) is Aluminium Chloride (AlCl2).

 

 

 
Aluminium Chloride consists of three Chloride atoms and one Aluminium atom which is shown in the image below. These atoms are structured in a trigonal planar with the three chlorine atoms surrounding the single aluminium atom with bonds, 120 degrees apart.The structure of the molecule is based upon temperature change. At temperatures around 190 degrees Celsius Aluminium Chloride converts to Al2Cl6. As temperatures increase further, the molecule is broken up into simple AlCl3  molecules. The aluminium and chloride atoms are bonded covalently, sharing electron pairs in the attractive and repulsive forces between the atoms. However this is only the case for the liquid or vapour form of Aluminium Chloride. When it is in solid form the atoms bond ionically, transferring electrons between atoms.
 
Aluminium atoms (Al) are composed of 13 protons and 14 neutrons  in its nucleus, and 13 electrons surrounding the nucleus. The  surrounding electrons are arranged in three shells, 2 in the first, 8 in the second and 3 in the third. Aluminium atoms are one of the lightest atoms with an atomic mass of 26.98 amu. Similarly, Chloride atoms have an atomic mass of 35.45 amu. Chloride atoms have 17 protons and 18 neutrons present in its nucleus and 17 electrons surrounding it in 3 shells. The first shell having 2 electrons, the second having 8 electrons and the third having 7 electrons.
mcheo4's picture

Acetone Blog

Submitted by mcheo4 on Tue, 19/07/2016 - 13:26
Acetone Molecule

My name is Michaela Cheong and I am a student at Brisbane State High School. In our current unit of science, we are learning about chemistry, specifically the structure and characteristics of atoms (building blocks which make up everything) and compounds (consist of two or more atoms which are chemically bonded). In this blog, I will show you a 3D model of a molecule of acetone along with a discussion of it’s molecular structure, uses and properties.

Andy's picture

Methane Molecule

Submitted by Andy on Wed, 25/06/2014 - 22:00
Methane Molecule

This is my first and simple construction of a molecule. I chose to do Methane (CH4), one atom of carbon and four atoms of hydrogen, because it takes the shape of a tetrahedron. In this blog, I used a different but simple method to construct this tetrahedron shape. There is a special angle in tetrahedron. With this special angle, we can easily construct a tetrahedron.