How does torsional strain differ from steric hindrance in terms of their impact on molecular conformation and reactivity?

Torsional strain and steric hindrance both affect the shape and reactivity of molecules, but in different ways. Torsional strain is caused by the resistance to rotation around a bond, leading to a twisted conformation. This strain can affect the stability and reactivity of a molecule. On the other hand, steric hindrance is caused by bulky groups that physically block the movement of other groups, affecting the shape and reactivity of the molecule. In summary, torsional strain is due to bond rotation, while steric hindrance is due to bulky groups blocking movement.