This is the certificate that i have just received in class just now during EM lessons.

This is what we have already gone through two years ago in sec2.

You will feel kind of blessed having been contributed to society...

Mrs Edison says " manage your time well". " Better be well-prepared than sorry"

Now is the time for us to push up our grades....

I have just received the re-exam chemistry paper from ms lee which was really meant for the mock exam in a few weeks later on....

Just studied chapter metals on reactivity....(chemistry)

Please Stop Calling My aunt Zela In London coz she's great.

Most reactive metals Potassium Sodium Calcium Magnesium Zinc Iron lead copper Silver least reactive..

Alloys improve the strength and hardness of the metals, improve the appearance of the metal, lower the melting point, is more resistant to corrosion than pure metals which are soft,,,

Alloys are made up of atoms of different sizes one is bigger than the other.

less ductile( drawn into wires) and less malleable ( beaten into drawn wires)

Pure metals are made up of the same atoms packed closely together.

They are soft so therefore easy to be ductile and malleable and the atoms are able to slide over one another easily over another.

high density, high melting and boiling point.

form positive ions when lose electrons.

Ionic compounds form strong bonds. Hard to reduce. stabilized compound.

Physics- electromagnetic waves....:):):):):):):):):)