Question

Which of the following conditions favors the existence of a substance in the solid state?

• A. Low temperature
• B. Weak cohesive forces
• C. High temperature
• D. High thermal energy

Answer 1

The correct option is A Low temperature

Option (A):

At high temperature substance exists in the liquid and gaseous state due to high thermal energy and hence increased molecular motion, which in turn leads to weak intermolecular attraction i.e., forces.

Option (B):

At low temperatures, a substance exists in a solid state due to low thermal energy and decreased molecular motion which leads to an increase in forces that hold the constituent particles together.

Option (C):

The thermal energy (also called heat energy) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. In high thermal energy substances exist in gaseous state.

Option (D):

The term "cohesive forces" is a generic term for the collective intermolecular forces (e.g., hydrogen bonding and van der Waals forces). In weak cohesive forces substances exist in the liquid and gaseous states.