O Levels Chemistry Help Needed..!! urgently

[Ahmed Raja]

Aoa to all community member's guys please help me to under stand isomerism and macromolecules. Nylon & Terylene structure.
2) Differences between diamond graphite and silicon dioxide their uses structure.

I will be thankful to you guys if you please help me sort out my problems.

 

[Ram97]

Aoa to all community member's guys please help me to under stand isomerism and macromolecules. Nylon & Terylene structure.
2) Differences between diamond graphite and silicon dioxide their uses structure.

I will be thankful to you guys if you please help me sort out my problems.

Can u plzz make Q.2 more clear????

 

[sweetiepie]

https://www.xtremepapers.com/community/threads/o-level-notes-center.11138/

 

[Amy Bloom]

Aoa to all community member's guys please help me to under stand isomerism and macromolecules. Nylon & Terylene structure.
2) Differences between diamond graphite and silicon dioxide their uses structure.

I will be thankful to you guys if you please help me sort out my problems.

Hi Ahmed.

Isomerism
I don't have much notes on isomerism, rather know that these are compounds having same molecular formula but different structural formulae. Its just a question of practice. The link below may help you to understand the types of isomerism, i used this when i studied my A-levels.
http://www.chemguide.co.uk/basicorg/isomerism/structural.html#top

Macromolecules (Giant covalent structure- Diamond, graphite, silicon dioxide)
http://www.chemguide.co.uk/atoms/structures/giantcov.html

Nylon and Terylene
I've explained these two below, only the basics.
You may consult
http://www.chemguide.co.uk/organicprops/amides/polyamides.html (See Nylon 6-6)
http://www.chemguide.co.uk/organicprops/esters/polyesters.html
These may appear to be complicated molecules but just replace the middle part by boxes of different colours!