Tuesday, September 7, 2010

Term 2 reflection (Post 8)

Hi there everyone! Today, I will now be talking about my term 2 reflection. After 1 term of studying in Hwa Chong, I have learnt that science is not as easy as it seemed to be in the first lesson. Coupled with all the tests, assignments and projects, science is really turning out to be not so easy.

However, I still like science as it was one of my favourite subjects since primary 5 and I am very interested in it as well.

So, in term 2, we learnt about the kinetic particle theory (KPT). This topic left a deep impression on my mind as the first lesson on it was when a few teachers came to watch us and there was even a video camera filming us!!


Above is the diagram of the states of matters. The first from the left is solid, second is liquid and third is gas.

Besides learning about the kinetic particle theory, I also learnt about elements, compounds and mixtures.

Elements are pure chemical substances consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. Common examples of elements are iron, copper, silver, gold, hydrogen, carbon, nitrogen, and oxygen. In total, 118 elements have been observed as of March 2010, of which 92 occur naturally on Earth.



Compounds are pure chemical substances consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together in a defined spatial arrangement by chemical bonds.

Mixtures are two or more substances mixed together but not chemically bonded/combined.

In conclusion, I still like science even though its harder as I have a huge interest in it. Hoping for more science lessons soon!!!!!!

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