4.1.2 alkanes

Question 1

general formula

cycloalkanes

Answer 1

Cn H2n+2

Cn H2n

Question 2

sigma bond

Answer 2

joined to four other atoms by single covalent bond

Question 3

• have a 3D specific tetrahedonal shape bc….

- angkle of each bond approx

Answer 3

• repel each other equally

- 109.5

Question 4

as chain length increases, boiling point…

Answer 4

increases

Question 5

increased chain length —>

Answer 5

• greater surface area of contact

- stronger london forces

Question 6

branched isomers hv

more branching —>

Answer 6

lower boiling points

• less surface area of contact
• weaker london forces

Question 7

REASONS FOR LACK OF REACTIVITY:
. C-_ AND C-_ SIGMA BONDS ARE
. C-_ BONDS ARE POLAR
. THE __________ OF C AND H IS SO ______ THAT THE - BOND CAN ALSO BE CONSIDERED ______

Answer 7

. C,H
. C
. ELCTRONEGATIVITY, SIMILAR, C,H, NON POLAR