Comments:

Cindy- Simple and nice! She highlighted important words which make the point stands out, thus her work can be easily read and understand. The pictures are clear too. Shall improve in my work and add more details in it;D Great work!

Xinhui- Even though the pictures she used to explain isotope are blur, her work is clear and simple to read. The words are big enough and easy to read. Shall increase the size of my words. Thanks for the comment;D keep it up!

Jieen- Nice blog! Her work is neat and understandable. Nice picture too!;p I think that the background is great but somehow makes the words difficult to read. Splendid!

Clique outingxDDD

Fun time during clique outing!! Yay!!!!xDD

Q1. What does an atom look like? What are the sub-atomic particles inside it?


The atom is a basic unit of matter that consists of a dense which has a nucleus in the centre, surrounded by a cloud of negatively charged electrons. the atomic nucleus contains a mix of positively charged protons ad electrically neutral neutrons.

The three main sub-atomic particles are protons, electrons and neutrons.

The electron is a subatomic particle carrying a negative electric charge.

The proton is a subatomic particle with a positive electric charge of 1 elementary charge. One or more protons are present in the nucleus of each atom, along with neutrons.

The neutron is a subatomic particle with no net electric charge and a mass slightly larger than that of a proton.

Q2. Draw the atomic structure of a sodium atom and a sodium ion....explain why you draw it this way.

Sodium atom has 11 electrons whereas sodium ion has 10 electrons. The electronic configuration of the sodium atom is (2.8.1), thus has one electron at the outermost shell. The sodium ion is stable thus loses one electron. Its electronic configuration is (2.8).

Q3. Draw the atomic structure of a sulfur atom and a sulfide ion....explain why you draw it this way.

The sulfur atom has 16 electrons, with electronic configuration of (2.8.6). The sulfur ion gained 2 electrons on the outermost shell, thus with the electronic configuration of (2.8.8).

Q4. Chlorine-35 atom and Chlorine-37 atom are called isotopes...Use these two examples to explain what is 'isotopes'.

Isotopes are different atoms of the same element which have the same number of protons but different number of neutrons. In this example, they are the same element, which have the same number of protons and different number of neutrons, thus they are isotopes.

Q5. Sodium is a metal and sulfur is a non-metal....why we classify them this way??

Sodium is a metal as it loses 1 electron to complete the valence shell. Sulfur is a non-metal shell as it gain 2 electrons to complete the valence shell.