Term 3 Progress

In term 3, we were to be tested on elements, compounds and mixtures, solutions and suspensions, separation techniques.
In elements, compounds and mixtures, I learnt about the different elements which scientists have found out and named. These elements are put together to make a periodic table. Each elemtent has a atomic number and mass. While in a periodic table there is periods and groups. Elements in the same group have similar chemical properties. My weak point in this chapter is that I fount it difficult to remember what element has what type of chemical properties, and what symbol represents which element. I have seen an improvement of my memory for the different symbols as I went through the periodic table throughly. I would like to read the periodic table more often in future, so as to better remember the symbols and not forget them in future.
Compound is made up of 2 or more elements, which are chemically joined, while mixtures, are 2 or more substances and are not chemically joined. I am know about the features of compounds and mixtures well, but I am not sure what substances are in a given compound, mixture. This is evident in the term 3 class test, as I have got three out of four questions wrong. I believe I had not cover this point well during my revision and I will pay special attention to this.
Separation techniques is one chapter which I have learnt online through e-learning. I have improved steadily in writing processes of separation, but I still lack of some points, rather key words, to make it the process more smooth. My problem lies with the chromatographhy separation. Through the term 3 class test, I have found out that "smudge" cannot be used when explaing when ink should not be used as the starting line. This is because it is not a scientific word. The word "absorb" also cannot be used as the proper term should be dissolve.