5A.1 Alkenes and their bonding

Question 1

what are alkenes

Answer 1

unsaturated hydrocarbons with a double bond between their carbon atoms

Question 2

what is the general formula of alkenes

Answer 2

CnH2n

Question 3

what are the bond angles between alkenes

Answer 3

roughly around 120 but to be more accurate 121 between the c-h and 118 between the h-h

Question 4

what is the general formula of cycloalkenes

Answer 4

CnH2n-2

Question 5

which is more reactive and why alkanes or alkenes

Answer 5

alkenes because they have a double carbon bond

Question 6

how does the double bond in alkenes forms

Answer 6

p-orbitals sideways overlap to form an orbital with a cloud of electron density above and below the single bond to form a pi (π) bond
Each region negative charge contains one electron – together make up a second shared pair of electrons
forming a pi bond that would restrict the rotation relevant to the c-c bond, and this point we would have a sigma and a pi bond in between the carbon atoms forming a double cond