Category: Chemistry

In chemistry class, we learn about a topic called Lewis Dot Structures Diagram where we need to draw dots and bondings between atoms. In this unit, we use Lewis Dot Structures (electron dot diagram) to show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. To draw Lewis Dot Structures, first we need to know the valence electron of the atom (an outer shell electron); the second step will be taking the number of valence electrons and draw it as dots around the atom.  

For example, Carbon has 4 valence electrons (an outer shell electron)

We can also draw bonding between two or more atoms. In a covalent bond, when two electrons bond together, we can draw a line to connect between the two electrons. For example Carbon and Oxygen. The two atoms combine together so that they can share electrons with each other to get eight electrons–which is the number that they want.   

After the summer break, I was introduced to a complex and rousing class called Chemistry. I was interested in the topic because the only thing I knew about Chemistry was the chemical explosions and other fun lab activities. Before doing the fun stuff with chemicals, our teacher introduced us to the topic of Chemistry and how it is relevant to our daily life. For example, Chemistry is really important to everyday life because it provides us with medicines, food processes, and etc. Currently, we are learning about the periodic table: “a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.” Moreover, we learn how to calculate the atomic mass, the atomic number, protons, electrons and more by using the Ptable. Even though Chemistry is a complex lesson, but I really enjoy it and can’t wait to see the explosion of the chemicals.