Describe the function and usefulness of a model in scientific investigations, using the atomic model as an example.

An atom is too small to be seen so that is why models are so useful. Along with the moon or the bone structure of an animal that existed 200, 000 years ago, you cant just see those tings with the naked eye at all times, but with a model you can have that by your side and be able to look at it and study or learn what you need to.

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