Intermolecular Forces Flashcards
0
Q
What do the forces determine.
A
Physical properties of a substance such as melting point and boiling point, viscosity, density and surface tension
1
Q
What are intermolecular forces?
A
The forces between molecules that keep them together in a solid, liquid or gas phase. Scientifically called Van Der Waai’s forces.
2
Q
Boiling point
A
The temperature at which the vapour pressure is = to the atmospheric pressure
3
Q
Melting point
A
The temperature at which a solid becomes a liquid
4
Q
Viscosity
A
An indication of a liquid’s resistance to flow
5
Q
Surface tension
A
Is due to the cohesive forces of a molecule on the surface of a volume of a liquid.
6
Q
Density
A
The number of particles per unit volume.
7
Q
Capillary
A
The ability of a substance to move up a tube as a result of the surface tension
