Which statements describe phase changes? check all that apply. particles in a liquid need to move more slowly in order to freeze. attractive forces overcome the motion of particles when a solid sublimes. attractive forces between the particles in a liquid are broken when a liquid boils. particles in gas move fast enough to make more attractive forces when the gas condenses.

The answer is (A) Particles in a liquid need to move more slowly in order to freeze. and (C),Attractive forces between the particles in a liquid are broken when a liquid boils.

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic