CHEM AND BIO HELP AND TIPS HERE

[Vin]

mohit1234 mentioned it... yea the question never asked about it... I know mentioning is not sinning but does it affect anything or is it important?

[Ivo]

mohit1234 mentioned it... yea the question never asked about it... I know mentioning is not sinning but does it affect anything or is it important?

Not important at all.  In my view, as long as you say at 8cm³, maximum height of ppt was reached, then that's the first mark.  I believe, writing that statement does not help or indeed actually answers the question, so no I don't think it's needed.

[Helium]

Question:

When asked to to draw diagram of a compound that shows

formula of compound, charges on ions, arrangement of valency electrons around negative ions.

For example MgCl2 we just draw both, with arrows of the moving electrons to cl.

unlike covalent bonding.

[Ivo]

Question:

When asked to to draw diagram of a compound that shows

formula of compound, charges on ions, arrangement of valency electrons around negative ions.

For example MgCl2 we just draw both, with arrows of the moving electrons to cl.

unlike covalent bonding.

For only ionic bonding, just draw the outer shell and don't bother with electron transfer stuff.

So for the diagram below of calcium chloride, this is a very good diagram except you only need to draw the outer shell, and not all the shells.  Sorry couldn't find a better diagram.

[Raywin]

Question:

When asked to to draw diagram of a compound that shows

formula of compound, charges on ions, arrangement of valency electrons around negative ions.

For example MgCl2 we just draw both, with arrows of the moving electrons to cl.

unlike covalent bonding.

Hmm, yeah i guess thts wht u have to do. draw arrows showing th direction of the moving electrons and then also showing like for eg: 2[Cl]^+ to show how the compound is finally. Umm hope u get me?   lol ivo's got it..

[ruruiw 60984]

does anyone have biology paper 1 november 2009 ??
cause its not openning on free exam papers or xtreme pastpapers either ..
if u have the pprs or any link please post them ..
thnk u

[Ivo]

does anyone have biology paper 1 november 2009 ??
cause its not openning on free exam papers or xtreme pastpapers either ..
if u have the pprs or any link please post them ..
thnk u

Please click here.

[8T]

Please click here.

Which varient with ms or without?

[Ivo]

Which varient with ms or without?

What do you mean?  Both variants of qp and ms are there.

[8T]

Oh ok sorry tht was extremely wierd i dnt even know why i asked the question.
Soory again (:

[Helium]

For only ionic bonding, just draw the outer shell and don't bother with electron transfer stuff.

So for the diagram below of calcium chloride, this is a very good diagram except you only need to draw the outer shell, and not all the shells.  Sorry couldn't find a better diagram.

Ok i get it,

Thanks Ivo and Raywin

[Vin]

For only ionic bonding, just draw the outer shell and don't bother with electron transfer stuff.

So for the diagram below of calcium chloride, this is a very good diagram except you only need to draw the outer shell, and not all the shells.  Sorry couldn't find a better diagram.

Oh! I was been taught only in covalent bonding we are supposed to draw the valence shell and full electronic configuration of an ionic bond, exactly like in the diag. that you have uploaded.

[Ivo]

Oh! I was been taught only in covalent bonding we are supposed to draw the valence shell and full electronic configuration of an ionic bond, exactly like in the diag. that you have uploaded.

Hmm, my teacher said that you don't, it's a waste of time and you won't get marks, apparantly.

[The Golden Girl =D]

Hmm, my teacher said that you don't, it's a waste of time and you won't get marks, apparantly.

same goes for my teacher 

[Vin]

Oh okay, thank you for the info.