Sunday, 1 July 2012

The Periodic Table

The periodic table is a table of the chemical elements in which the elements are arranged by order of atomic number in such a way that the periodic properties (chemical periodicity) of the elements are made clear. The standard form of the table includes periods (usually horizontal in the periodic table) and groups (usually vertical). Elements in groups have some similar properties to each other. There is no one single or best structure for the periodic table but by whatever consensus there is, the form used here is very useful. The periodic table is a masterpiece of organised chemical information. The evolution of chemistry's periodic table into the current form is an astonishing achievement with major contributions from many famous chemists and other eminent scientists. 
And here's a picture of the periodic table (: Is it too blur? :P 






REFERANCE : http://www.webelements.com/ (:



some MORE elements! How exciting :D

Basically this is the collated info from my group :)
Do note : BP = Boiling Point, MP = Melting Point


Nitrogen
BP = -196 ºC
MP = -210 ºC
Non Metallic, Colourless, Odourless and Tasteless

Oxygen
BP= -183 ºC
MP= -210 ºC
Non Metallic, Colourless, Odourless and Tasteless


Beryllium

BP= 2970 ºC
MP= 1278 ºC
Metallic, Steel-Grey, Lightweight and Brittle alkaline earth metal


Tin
BP= 2602 ºC
MP= 231.93 ºC
Metallic, Shiny, Silver, White, Fairly light and soft


Potassium
BP= 1032 ºC
MP= 336.5 ºC
Metallic, Electricity & Heat well, not hard, soft silvery white alkali metal


Aluminium

BP= 2519 ºC
MP= 660.32 ªC
Metallic, Relatively Soft, Conducts Heat & Electricity well, Lightweight





eLement - Fluorine :D

FLUORINE
Halogen, a non metallic element that forms strongly acidic compounds with hydrogen, from which simple salts can be made (:
Melting Point : -219.6 ºC
Boiling Point : -188 ºC
Physical Attributes 


  • Usually looks Yellow-Green but it is actually pale-yellow 
  • It is crystal-like in its solid form
  • It has a strong an characteristic odour that can be detected in very small amount
Physical Properties


  • Electronegativity
  • Reacts at room temperature
  • Reacts with other gases
  • Properties will depend on its concentration and temperature
Credit : Owner (because I kind of forgot where I got this info from...) T.T


And here's a picture of Fluorine in its solidified form :3














:D

Saturday, 30 June 2012

eLements (x (:

Definition of Element : Pure substances that cannot be split up into two or more simpler substances by chemical processed or by electricity.
Examples : Sugar, Water ≠ Element (because they can be broken down to water + carbon and hydrogen + oxygen respectively) However, the last 4 ARE elements because they cannot be furthar broken down.


  • Chemicals use chemical symbols to represent elements. 
  • Elements -> 2 Groups -> Metals/Non-Metals
  • Some elements have properties of both metal and non-metals, though.
  • The atom is the smallest particle of an element that has the chemical properties of an element.
  • Not all elements exist as atoms.
  • Metals exist as atoms in a giant structure. Most non-metals exist as molecules. 
  • A molecule is made up of 2 or MORE atoms that are chemically combined.
  • Molecules that are formed by 2 atoms -> Diatomic Molecules
  • Molecules that are formed by 4 or more atoms -> Polyatomic Molecule 

Referance : G.C.E 'O' Level Chemistry Matters Textbook Pages 59-63

A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by the number of protons they possess.
Proton =  A proton is a component of an atomic nucleus with a mass defined as 1 and a charge of +1. The nucleus of a hydrogen atom. The H+ ion.
Valence =  Valence is typically, the number of electrons needed to fill the outermost shell of an atom. 
Electron = negatively charged component of an atom. Electrons exist outside of and surrounding the atom nucleus. Each electron carries one unit of negative charge and has a very small mass as compared with that of a neutron or proton.
Neutron = The neutron is the particle in the atomic nucleus with a mass = 1 and charge = 0.
Atom = An atom is the defining structure of an element, which cannot be broken by any chemical means. A typical atom consists of a nucleus of protons and neutrons with electrons orbiting this nucleus. 
Molecule = a molecule refers to two or more atoms which have chemically combined to form a single species.

Referances : 
http://chemistry.about.com/od/chemistryglossary/a/elementdef.htm 
http://chemistry.about.com/od/chemistryglossary/a/protondef.htm
http://chemistry.about.com/od/chemistryglossary/g/moleculedef.htm
http://chemistry.about.com/od/chemistryglossary/a/neutrondef.htm
http://chemistry.about.com/od/chemistryglossary/a/atomdefinition.htm
http://chemistry.about.com/od/chemistryglossary/a/electrondef.htm
http://chemistry.about.com/od/chemistryglossary/a/valencedef.htm

Hey Everybody~~~ ^^

Hey everyone reading this blog [i dont think anyone is but lets be optimistic okay?] ^~^ This is my first post here. Sooo...I'll just say...Enjoy my blog if you love Chemistry! [Which I dont because I'm not really a Science person :P Im more of a language person haha] Anyways, I'll try to make this blog as-not-boring-as-possible xD Hope you follow meeeee :D wait...why would you follow a Chemistry blog LOL xD *throws cookies* oh and... (: