Flashcards in Alkanes Deck (28)
representation of molecule showing how many atoms are bonded to each other
full structural formula
shows every bond and atom
condensed structural formula
often omits bonds where they are assumed and groups atoms together
minimum information required to describe molecule non-ambiguously
show relative positions of atoms and groups around carbon in 3D
How do you show bonds sticking forwards?
solid, enlarging wedge
How do you show bonds sticking behind?
How do you show bonds in plane of paper?
1 carbon in chain
2 carbons in chain
3 carbons in chain
4 carbons in chain
5 carbons in chain
6 carbons in chain
what do you add to chain suffix?
prefix that shows how many chains there are in the molecule - di, tri, tetra
How do you show where the carbon chains are attached?
number of carbon atom next to it so that numbers add up to smallest of all possibilities
molecules that have the same molecular formula but different arrangements of the atoms
As the size of the molecule increases, the number of isomers ---
trend in melting and boiling points for group 17 and 18
melting/boiling points increase down group because as size of molecules increases so does van der Waals forces
what is the general formula for halogenoalkanes?
CnH2n+1X (where X is halogen)
What do halogenoalkanes contain?
atom of fluorine, chlorine, bromine or iodine bonded to carbon skeleton of molecule
Do halogenoalkanes have a polar bond?
yes so more reactive