Help please :(

[Andyila1.2]

i neeed help in acid and bases chapter please any1 help.
thnx

 

[IGCSE1234]

wait for some of the chemistry notes to be posted on http://www.xtremepapers.com/communi...012-chemistry-paper-2-2012-discussions.16598/

 

[Manobilly]

Like what ,post your doubts here!Will solve them

 

[IGCSE1234]

Like what ,post your doubts here!Will solve them

are u core or extended

 

[Manobilly]

Extended

 

[IGCSE1234]

i am sorry i am core i don't have extended notes.

 

[Manobilly]

No I dont need any notes I was willing to help if u need so.

 

[IGCSE1234]

No I dont need any notes I was willing to help if u need so.

i am sorry i got confused between u and andiliya rly sorry

 

[Manobilly]

Its okey.

 

[Penalopi]

i neeed help in acid and bases chapter please any1 help.
thnx

Acids are proton doners ( give out H+ ions) and bases accept them (proton acceptors) . Strong acids and bases undergo complete ionisation e.g. When NaOH or HCL react all their particles will be turned into ions.
ACIDS:
-turn the colour of litmus paper red
-react with metals to produce a salt + hydrogen
- react with bases (neutrailisation reaction) to produce a salt + water
-react with carbonates to produce a salt + carbon dioxide + water

BASES:
-All metal hydroxides and oxides are bases (group 1 and the lower part of group 2 metal hydroxides are called alkalis- they are water soluble)
-They turn litmus paper blue
-They react with acids to produce a salt + water
-They can displace ammonia from it's compouds, producing a salt + ammonia + water

Note: Amphoteric substances act as bases when they react with acids and as acids when they react with bases (e.g. Aluminium oxide)

Hope that helped!

 

[Andyila1.2]

It really did ......jus chck ma new thread and help me with that