Police officers are generally responsible for apprehending criminals, maintaining public order, and preventing and detecting crimes. Police officers are sworn to an oath and are granted the power to arrest and imprison suspects.Their common responsibilities include keeping of the peace, enforcement of the law, protection of the public and property, and the investigation of crimes.

That is why i want to become a policeman.I want to be part of the safekeeping of Singapore.Its my dream career.But i dont know of any policeman who is related to me or close to me.

Strength and weakness

I find that my strength is in when i am doing the practicals.Its much easier than the theory part.I have problems when calculating the moles of atoms and molecules.I should practise more on that.

Reflection on atoms,moles and stoichiometry

I have learnt that there are many system of units.One example is the indian units of measurement.The mass is measured in ratti,which is approximately 0.000012125kg.I have also learnt about bar,which equals to 10 in the power of 5 Pa.

cations

I have learnt that cations and anions combine to form ionic bonds.

Atoms of noble gases do not combine with other atoms.

Noble gas atoms do not gain,lose or share electrons.

chapter 3

Binary covalent compounds only contain 2,non-metallic elements.

N2 is written as dinitrogen.

I have learnt the prefixes for each number.

HI

CHEMISTRY ROCKS!