H̟e̟l̟p̟
b̟a̟s̟i̟c̟a̟l̟l̟y̟ c̟o̟p̟p̟e̟r̟ c̟a̟r̟b̟o̟n̟a̟t̟e̟ , z̟i̟n̟c̟ c̟a̟r̟b̟o̟n̟a̟t̟e̟ a̟n̟d̟ l̟e̟a̟d̟ c̟a̟r̟b̟o̟n̟a̟t̟e̟
a̟r̟e̟ e̟x̟a̟m̟p̟l̟e̟s̟ o̟f̟ d̟e̟c̟o̟m̟p̟o̟s̟i̟t̟i̟o̟n̟ r̟e̟a̟c̟t̟i̟o̟n̟s̟
t̟h̟e̟ q̟u̟e̟s̟t̟i̟o̟n̟ i̟s̟ h̟o̟w̟ a̟r̟e̟ t̟h̟e̟y̟? ?

Because they break down easy when heated (thermal decomposition) to form two or more products 

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