Lesson Notes- Grade 8

mole concept

acids and bases

chemistry Revision Notes

Titration

Titration is an important topic in O/L chemistry cox it has been appearing in P4 papers for many yrs as a compulsory question. So its important that u ans the questions well to obtain maximum marks from it. There has been a similar pattern of how the question appears. so let me try to summarise hopin dat it can help u..well da common steps include;-
1. finding da mass of da sample ; just substract da given values.
2. apparatus dat cud be used to transfer 25cm3 of solution to da conical flask: pipette ;check ur spelling once again!
3. indicTOR colour change; well here check which is there in da burette? if it contains acid final indicator colour for methyl orange wl b orange or red..so jus write yellow to orange/red

well i wl try to write the remaining in some other time...
any questions??? let me know.

Titration notes just click the link Titration

chemistry of love..

While talkin abt relationships i often hear ppl usin phrases like 'they ve gud chemistry', 'there is a chemistry goin on betwyn da 2''...nd so on..well it cud b true,cox there r chemicals that r involved in attractin 1 to another.

one such chemical is phenylethylamine.it is a natural compound biosynthesized from the amino acid phenylalanine by enzymatic decarboxylation. in da human brain it is believed to function as a neurotransmitter. simple actions such as meetin da eyes, touchin da hand can trigger the release of dis chemical frm da brain resultin sweaty palms, general restlessness etc as common symptoms of love..

phenylethylamine is an aromatic amine nd is a colourless liquid at room temperature.it is also water soluble.

A very interesting thing is that chocolate is known to have very high level of this chemical…perhaps that’s the reason y it is considered as a perfect gift for ur gf/bf..

phenylethylamine is therefore known as da luv molecule..