[otrivine]

(Original post by Natalie21)
What notes are these?



They're actually less volatile due to the hydrogen bonds..

hi can you ask me questions and no they are notthing

[Natalie21]

(Original post by otrivine)
hi can you ask me questions and no they are notthing

On what?

[otrivine]

(Original post by Natalie21)
On what?

on chem unit 1 cause the exam is in 2 weeks so scary how are you ?by the way

[Natalie21]

(Original post by otrivine)
on chem unit 1 cause the exam is in 2 weeks so scary how are you ?by the way

I'm fine thanks

Definition of a mole

[PrincessMedic]

(Original post by Natalie21)
What notes are these?



They're actually less volatile due to the hydrogen bonds..

Yeah...uhm...that was a uhm...trick question

[otrivine]

(Original post by PrincessMedic)
Yeah...uhm...that was a uhm...trick question

hi shall we ask each other questions

[PrincessMedic]

(Original post by otrivine)
hi shall we ask each other questions

Yeah sure Only unit 1 though, please

[Natalie21]

(Original post by PrincessMedic)
Yeah...uhm...that was a uhm...trick question

That's what I thought

(Original post by otrivine)
hi shall we ask each other questions

(Original post by PrincessMedic)
Yeah sure Only unit 1 though, please

Sure

[otrivine]

(Original post by Natalie21)
I'm fine thanks

Definition of a mole

amount of substance containing many particles as there are carbon atoms in exactly 12g of a carbon-12 atom

[Natalie21]

(Original post by otrivine)
amount of substance containing many particles as there are carbon atoms in exactly 12g of a carbon-12 atom

better wording would be "in exactly 12g of carbon-12 atoms" - otherwise doesn't really make sense :P

correct a.k.a avagadro's constant

[Rainingshame]

(Original post by otrivine)
amount of substance containing many particles as there are carbon atoms in exactly 12g of a carbon-12 atom

6.02*10^23 of a molecule, always add the number or avagardo's constant

[otrivine]

(Original post by Natalie21)
better wording would be "in exactly 12g of carbon-12 atoms" - otherwise doesn't really make sense :P

correct a.k.a avagadro's constant

thanks more

[otrivine]

(Original post by Rainingshame)
6.02*10^23 of a molecule, always add the number or avagardo's constant

thanks can u ask me now?

[Natalie21]

(Original post by otrivine)
thanks more

your turn...

[otrivine]

(Original post by Natalie21)
your turn...

state one use of NaF

[Rainingshame]

(Original post by otrivine)
thanks can u ask me now?

Define a mole.
As a bonus define relative atomic mass. 3 Marks
I did unit 1 in Jan (78/90 A ) so here's a unit 2 question:
Write the balanced structural equation for the complete oxidation of propan-1-ol using [O] to represent the oxidising reagent. What is the name of the oxidising reagent and the catalyst used?

[otrivine]

(Original post by Rainingshame)
Define a mole.
As a bonus define relative atomic mass. 3 Marks
I did unit 1 in Jan (78/90 A ) so here's a unit 2 question:
Write the balanced structural equation for the complete oxidation of propan-1-ol using [O] to represent the oxidising reagent. What is the name of the oxidising reagent and the catalyst used?

me too i did the jan paper for chem but got a B 65/90
well done

-is the weighted mean mass of an atom of an element compared with 1/12th of the mass of carbon-12 atom .
- ch3ch2oh + 2(O) to give ch3ch2cooh

[Rainingshame]

(Original post by otrivine)
me too i did the jan paper for chem but got a B 65/90
well done

-is the weighted mean mass of an atom of an element compared with 1/12th of the mass of carbon-12 atom .
- ch3ch2oh + 2(O) to give ch3ch2cooh

You missed off the +2H2o at the end, that's 2 marks lost. And also you forgot the second part it's acidified potassium dichromate. The catalyst is h2SO4.
got a question on unit 2 for me?

[PrincessMedic]

Explain the trends in ionisation energy and atomic radius across a period. (3 marks)

[Natalie21]

(Original post by otrivine)
state one use of NaF

No idea - never learnt this.