Build molecular models of cyclobutane and cyclcopentane. a. what are the approximate bond angles in each

Answer is: the approximate bond angle in cyclobutane is 90 degrees and in cyclopentane is 108 degrees.

Cyclobutane has single covalent bonds, the actual C-C-C bond angle is 88 degrees, because it has a slightly folded form to relieve some torsional strain.
Cyclopentane also has single covalent bonds and it has an unfixed puckered shape that undulates up and down.

1.from liquid state to gaseous state is evaporation 3.solid to liquid is melting 5. solid to gaseous state is sublimation 6. gas to solid state is decomposition 7. a change of state is known as the states of matters