I'm not so sure about which one is the right one. In the question paper for the mark scheme I drew the ethene structure which is on the CGP guide. However the AQA mark scheme structure is slightly different due to the position of the 4 Hydrogen atoms.
My question is which structure is the correct true structure of ethene?
Well technically the CGP revision guide is correct as the carbon atoms have 3 areas of electron densities so it's a trigonal planar shape with the bond angle being 120 degrees. However when they ask you to draw the structure then probably both are correct if that's what it says in the mark scheme.
I'm not so sure about which one is the right one. In the question paper for the mark scheme I drew the ethene structure which is on the CGP guide. However the AQA mark scheme structure is slightly different due to the position of the 4 Hydrogen atoms.
My question is which structure is the correct true structure of ethene?
Well I think it depends as to whether you should give yourself the mark; if you're doing GCSEs (or equivalent), give yourself the mark, however if you're doing A levels (or equivalent), don't give yourself the mark.
If you haven't yet learned about bond angles, give yourself the mark
Well I think it depends as to whether you should give yourself the mark; if you're doing GCSEs (or equivalent), give yourself the mark, however if you're doing A levels (or equivalent), don't give yourself the mark.
If you haven't yet learned about bond angles, give yourself the mark
So if a question asked you to draw ethane and you drew...
So if a question asked you to draw ethane and you drew...
you shouldn't get the mark?
I think it would depend on the context of the question then - if the question's about bond angles, you should really draw the shape with the wedged / dotted lines.
I remember a question about drawing the structures (showing bond angles) of two optical isomers back in Unit 4 (A2), and they only gave the mark if you drew the wedged / dotted lines + showed the mirror line.
I think it would depend on the context of the question then - if the question's about bond angles, you should really draw the shape with the wedged / dotted lines.
I remember a question about drawing the structures (showing bond angles) of two optical isomers back in Unit 4 (A2), and they only gave the mark if you drew the wedged / dotted lines + showed the mirror line.