Lesson 1.3: Intermolecular Forces and Properties of Liquids Flashcards
It is the property of a liquid to resist an external force and thus assume a lesser surface area.
surface tension
This is attributed to the strong attractive and cohesive forces between and among the molecules, particularly at the surface of the liquid.
surface tension
Several manifestations of this property are the ability of water to hold a relatively heavier paper clip on its surface and to allow water striders to walk on its surface.
surface tension
Moreover, the ______________________ explains why spherical water droplets form on leaves.
strong cohesive force
It is the resistance of a liquid to flow
viscosity
It is loosely tension of water
referred to as the thickness or thinness of a liquid.
viscosity
The greater the _____________________, the more ___________ the substance.
- intermolecular forces
- viscous
It is the pressure exerted by its vapor when in equilibrium with its liquid or solid.
vapor pressure
This means that when a liquid or a solid substance is made to evaporate in a closed container, the gas exerts a pressure above the liquid.
vapor pressure
Substances with relatively strong intermolecular forces will have ______________________ because the particles will have difficulty escaping as a gas.
low vapor pressure
It is the temperature at which its vapor pressure is equal to the external or atmospheric pressure.
boiling point
The normal boiling point of water is _______.
100°C
At higher altitudes, the atmospheric pressure is ______________; hence, the boiling point
will subsequently __________.
- lower
- decrease
It is the amount of heat required to vaporize one mole of a substance at its boiling point.
Molar beat of vaporization
It is made up of 3 atoms.
water molecule (H20)
It is polar.
water
In each water molecule, the ____________ attracts more than its “fair share” of electrons.
oxygen atom
The oxygen end “acts” ___________.
negative
The hydrogen end “acts” ___________.
positive
The ends causes the water to be ___________.
polar
However, water is _________.
neutral
One hydrogen bond is _______, but many hydrogen bonds are ________.
- weak
- strong
In the interaction between water molecules, ____________ end of water molecule is attracted to the positive hydrogen end of another water molecule to form a ______________.
- negative oxygen
- hydrogen bond
It refers to the attraction between particles of the same substance (which is why water is attracted to itself).
cohesion
This results in surface tension.
cohesion
It is the measure of the strength of water’s surface.
surface tension
It produces a surface tension on water that allows insects to walk on the surface of water.
cohesion
It is the attraction between 2 different substances.
adhesion
This is when water will make hydrogen bonds with other surfaces such as glass, lant tissues, soil, and cotton.
adhesion
It is when water molecules will “tow” each other along when in a thin glass table.
capillary action
