Lesson 2 Flashcards
(19 cards)
Force that causes the molecules on the surface of a liquid to be pushed together and form a layer.
SURFACE TENSION
The resistance of fluids to flow.
VISCOSITY
This causes a high vapor pressure for a liquid.
VAPOR PRESSURE OF A LIQUID
Is the temperature at which the vapor pressure of the liquid is equal to the atmospheric pressure.
BOILING POINT OF A LIQUID
The higher the vapor pressure of a liquid, _______.
the lower its boiling point
Is the amount of heat needed to vaporize a given amount of substance as its boiling point.
MOLAR HEAT OF EVAPORATION
Characterized by an extended three dimensional arrangement
Solids
SOLID categorized into two groups:
-CRYSTALLINE SOLIDS
-AMORPHOUS SOLIDS
-form a regular repeating three-dimensional structure called a crystal lattice
-arranged in fixed geometric patterns or lattices.
Crystalline Solid
-Have a random orientation of particles.
-Arranged in random Manner
Amorphous Solid
The repetition of structural units of the substance over long atomic distances is referred to as _______.
long-range order.
The basic repeating structural unit of a crystalline solid is a _____.
UNIT CELL
The structures of crystalline solids are built from repeating units called _______.
CRYSTAL LATTICES
Crystalline solids examples
Ice, pyrite, amethyst, flourite
Amorphous metals are not transparent and have relatively lower electrical conductivity.
True
How does water molecules disrupt/break the hydrogen bond?
By increasing temperature or heat energy.
How does the kinetic energy of the molecules increase?
KE will be increased by increasing the temperature which to the escape in IMFA.
____________, a water property that helps to cool down the body of living organism (Human heat and vaporize sweat and process of vaporizing; vaporize plant water is called TRANSPIRATION).
Evaporation cooling
Why does small object floats above the surface of the fluid?
Due to the surface tension
