GCSE Science and Maths revision

[danbilal]

aerobic- release of energy from the breakdown of glucose
anaerobic- release of a little bit of energy very quickly inside the cells when oxygen is not available

 

[Kittygyal]

salamualikum.
well done dude, now you may ask a question
ma'assalama

 

[hibah786]

salam alaikum every1 i jus wanna say that i am new 2 this service n i wanna ask is there sum sort of website specially made for GCSE science coz i am takin ma examz in june n need 2 start revisin specially in chemistry ma salama every1 fi aman allah

 

[strider]

Correct, again.

Next question: Why is the human circulatory system termed as a 'double circulatory system'?

 

[strider]

salam alaikum every1 i jus wanna say that i am new 2 this service n i wanna ask is there sum sort of website specially made for GCSE science coz i am takin ma examz in june n need 2 start revisin specially in chemistry ma salama every1 fi aman allah

Try: www.bbc.co.uk/bitesize

Alternatively, depending on your specific course you can get some truely excellent revision guides to assist you in your revision.

 

[Kittygyal]

salamualikum.
to the ''new'' sis who wnats help go to www.bytesize.com sumet lyk at

&& am sure your school sell revision guides get the ''modular'' ones aright
ma'assalama

 

[The Ruler]

Correct, again.

Next question: Why is the human circulatory system termed as a 'double circulatory system'?

because there is the systematic circulation and the pulmonary circulation

right :?...sytematic is the circualtion that goes heart>artery/aorta>capilaries>Vein/Venacava>heart

pulmonary circulation: pulmonary artery>lungs>pulmonary vein>heart

 

[mizan_aliashraf]

Salam
It's that time again this year. How quickly it has come. May I take this opportunity to wish all our GCSE students the best of luck.
Wassalam

 

[seeker_of_ilm]

kittygyal is not a student, she's an english teacher.

You gotta be kidding right? English Teacher :rollseyes

 

[afriend]

You gotta be kidding right? English Teacher :rollseyes

:giggling: Behave yourself! ;D ;D ;D

 

[aadil77]

Here's a chemistry question:

whats the haber process?
What are the optimum conditions for it?
And what is the word equation for it?
nitrogen + hydrogen -----> Ammonia

 

[strider]

because there is the systematic circulation and the pulmonary circulation

right :?...sytematic is the circualtion that goes heart>artery/aorta>capilaries>Vein/Venacava>heart

pulmonary circulation: pulmonary artery>lungs>pulmonary vein>heart

I was looking for a rather simplified answer along the lines of 'blood enters the heart twice over per complete circuit' but :thumbs_up

 

[The Ruler]

Here's a chemistry question:

whats the haber process?
What are the optimum conditions for it?
And what is the word equation for it?
nitrogen + hydrogen -----> Ammonia

1. haber process is used to make ammonia from hydrogen and nitrogen

2. 250 atmospheric pressure and 450-500C temperature

3. hydrogen + nitrogen (reversible reaction sign thingamajig) ammonia + heat.

next question:

when electrolysing bauxite (aluminium ore), what is used to decrease its melting point?

 

[Maarya]

Salam
It's that time again this year. How quickly it has come. May I take this opportunity to wish all our GCSE students the best of luck.
Wassalam

thankyou...insh'allah we will all pass with our brothers and sister's du'as

 

[E'jaazi]

All odd numbers add up to be even and all even numbers add up to be even as well.

 

[cute123]

All odd numbers add up to be even and all even numbers add up to be even as well.

Hope this formula list helps ,

 

[Maarya]

saddows is dat all u guyz think bout? REVISING!!!!!!!!!!!!!!!!!!!!!!!!!!11

well, its either revising, getting the grades and being successful, or not revising and getting U's and living the rest of our lives in misery...which would you choose?

 

[bint abdulhamid]

well, its either revising, getting the grades and being successful, or not revising and getting U's and living the rest of our lives in misery...which would you choose?

huh sum ppl go 4 da din instead of dunya

 

[aadil77]

the aluminium is dissolved in cryolite.

Next question:

why is power transmitted at high voltages through power lines?

 

['Abd al-Baari]

Salams

^Is it because of the large amount of power involved^