AQA GCSE - Unit 3 (P3,B3,C3) New specification papers.

I am still looking for the progress tests and mark scheme for chemistry unit 3. Anybody have any idea where I could get them ? Much obliged if someone could post a link

Reply 721

Blake-inator

9

^^^ yeah id want them too

Reply 722

Captain Anonymous

14

Think this will be my last time in the holidays today, revising science :smile:

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Reply 723

sneakbo2

10

Original post by Captain Anonymous

Think this will be my last time in the holidays today, revising science :smile:

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You finished P3 before me :redface:

I still have 3 pages left :frown:

Reply 724

beaux1

2

Original post by Captain Anonymous

what book/how are you using to revise

at the moment just the CGP revision guide and example papers that our teachers have provided..

Reply 725

Captain Anonymous

14

Original post by beaux1

at the moment just the CGP revision guide and example papers that our teachers have provided..

Oh okay

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Reply 726

Captain Anonymous

14

Original post by sneakbo2

You finished P3 before me :redface:

I still have 3 pages left :frown:

YAAAY I'm re capping everything again today though :smile:

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Reply 727

Efemena15

OP

4

Original post by Captain Anonymous

YAAAY I'm re capping everything again today though :smile:

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This is also at everyone else. I just wanted to know how long it is taking you to revise? For example, how long it takes you to complete a page in the CGP book. Because you guys seem to be doing it really quickly, while also being able to remember everything :eek:

. Any tips please?

Reply 728

sneakbo2

10

Original post by Efemena15

This is also at everyone else. I just wanted to know how long it is taking you to revise? For example, how long it takes you to complete a page in the CGP book. Because you guys seem to be doing it really quickly, while also being able to remember everything :eek:

. Any tips please?

I've done P3 now :biggrin:

Science COMPLETE. One page takes about 5 or so mins depending how hard it is, don't stay on the same page till you remember it all COMPLETELY word for word, you will just get fed up. Just get the basic principles down and try to understand it rather than just memorise the book. If you can do that you can apply it to different situations, and some more complicated concepts come from previous pages (especially in P3).

Reply 729

Efemena15

OP

4

Original post by sneakbo2

I've done P3 now :biggrin:

Science COMPLETE. One page takes about 5 or so mins depending how hard it is, don't stay on the same page till you remember it all COMPLETELY word for word, you will just get fed up. Just get the basic principles down and try to understand it rather than just memorise the book. If you can do that you can apply it to different situations, and some more complicated concepts come from previous pages (especially in P3).

Wow congrats! :biggrin:

Thanks a lot, I'll give it a go and get back to you later on

Reply 730

BI0

7

My hand hurts from Fleming's left hand rule.

Reply 731

sneakbo2

10

Original post by Efemena15

Wow congrats! :biggrin:

Thanks a lot, I'll give it a go and get back to you later on

I forgot to say, then you recap and learn all those little bits that wouldn't stay in your head. By the time of the exam you should know the book inside out completely

Reply 732

Arshii

Can anyone please explain electromagnets?!?
like electromagnetic induction and the motor effect??
I've been stuck on it for ages! :frown:

Reply 733

sneakbo2

10

Original post by Arshii

Can anyone please explain electromagnets?!?
like electromagnetic induction and the motor effect??
I've been stuck on it for ages! :frown:

Electromagnets: First you need to know the definition of a magnetic field, which is a region in which wires carrying current and magnetic materials experience a force on them.

If you put a magnetically "soft" iron core in to coils of wire carrying current (or a solenoid), this increases the strength of the magnetic field. If you stop the current flowing through the coils, the electromagnet turns off because the soft iron core demagnetises very easily.

It's useful for cranes which basically pick up metals by attracting them with an electromagnet. The electromagnets can be turned off, so you can drop the metals wherever you wanted them.

However if you were to have a hard core the metal would stay magnetised even if current through the wire was turned off. This isn't used for cranes because once the metals are attracted to the crane, you wouldn't be able to drop them off as the magnet can't turn off.

Reply 734

lolface32

Original post by Captain Anonymous

Think this will be my last time in the holidays today, revising science :smile:

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Me to, just got to go over/ skim some parts of the book. Trying to focus on History and Literature at the moment. Ooooh, and preparing for prom :biggrin:

Reply 735

lolface32

Original post by BI0

My hand hurts from Fleming's left hand rule.

I know right? You have to go full retard to do it :tongue:

Reply 736

Arshii

Original post by sneakbo2

Electromagnets: First you need to know the definition of a magnetic field, which is a region in which wires carrying current and magnetic materials experience a force on them.

If you put a magnetically "soft" iron core in to coils of wire carrying current (or a solenoid), this increases the strength of the magnetic field. If you stop the current flowing through the coils, the electromagnet turns off because the soft iron core demagnetises very easily.

It's useful for cranes which basically pick up metals by attracting them with an electromagnet. The electromagnets can be turned off, so you can drop the metals wherever you wanted them.

However if you were to have a hard core the metal would stay magnetised even if current through the wire was turned off. This isn't used for cranes because once the metals are attracted to the crane, you wouldn't be able to drop them off as the magnet can't turn off.