Sunday, April 20, 2014

Chemistry Reflection 10



Today in Chemistry, we learn about covalent bonding. Unlike in ionic bonding, the atoms cannot transfer electrons to one another so they have to share electrons. An example is Cl2 or Cl-Cl.

 http://ibchem.com/IB/ibfiles/bonding/bon_img/cl2_venn.gif


Sometimes there can be a double or triple bonding. An example is N2. Instead of having one line between the two nitrogen. Instead there is 3 lines because it is triple bonding.

 http://www.gcsescience.com/Nitrogen-Molecule.gif

Compounds can contain more than one covalent bond. An example of this is methane or CH4 which needs 4 hydrogen. It will be written as 4 lines surrounding C with H in it.
http://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Covalent.svg/200px-Covalent.svg.png

Sunday, April 13, 2014

Chemistry Reflection 9

In Chemistry, we learn more on ionic bonding such as the diagram on how an element can lose an electron and gain a charge or an element gaining an electron and making it get a negative charge.

http://scienceaid.co.uk/chemistry/fundamental/images/ionic.jpg

So NA which has 11 electrons give one electron to Cl which makes both of them have full outer shells making them NaCl. Sometimes we also need more then one element to form an ionic bond.

We also do a worksheet on ionic bonding diagram