Two cups of the same size are filled to the brim with clear liquids. cup a holds water. cup b contains alcohol. your teacher challenges you to figure out which cup holds water. because of your great science knowledge, you know that all substances have their own special properties. you and your lab partner add an ice cube to each cup. the ice floats in one liquid. you predict it is water. and the ice sinks in the other liquid. you predict that liquid is alcohol. what type of property of matter did you use to identify the liquids?

Density because ice is less dense than water, therefore it floats
However, ice is more dense than alcohol, so it sinks

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