Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
23 Cards in this Set
- Front
- Back
Cohesion
|
The building together of life molecules, often hydrogen bonds.
|
|
Adhesion
|
The attraction between different types of molecules.
|
|
Surface Tension
|
A test of how difficult it is to stretch or break the surface of a liquid. Water has a high surface tension becayse of the hydrogen bonding of surface molecules.
|
|
Kinetic Energy
|
The energy associated with the relative motion of objects. Moving matter can perform work by imparting motion to other matter.
|
|
Heat
|
The total amount of kinetic energy due to the random motion of atoms or molecules in a body of matter; also called thermal energy. Heat is energy in its most random form.
|
|
Temperature
|
A measure of the intensity of heat in degrees, reflecting the average kinetic energy of the molecules.
|
|
Celsius Scale
|
A temperature scale (C) equale to 5/9(F-32) that measures the freezing point of water at 0C and the boiling point of water at 100C.
|
|
Calerie (cal)
|
The amount of heat energy required to raise the temperature of 1 g of water by 1C, also the amount of heat energy that 1 g of water release when it cools by 1C. The calorie usually used to signify the energy content of food, is a kilocalerie.
|
|
Kilocalerie (kcal)
|
A thousand caleries; the amount of heat energy required to raise the temperature of 1 K of water by 1C.
|
|
Specific heat
|
The amounnt of heat that must be absorbed or lost for 1 g of a substance to change its temperature by 1C.
|
|
Heat of vaporization
|
The quantity of heat a liquid must absorb for 1 g of it to be converted from the liquid to the gaseous state.
|
|
Evaporative Cooling
|
The process in which the surface of an object becomes cooler during evaporation, owing to a change of the molecules with the greatest kinetic energy from the liquid tothe gaseous state.
|
|
Solution
|
A liquid that is a homeogeneous mixture of two or more substances.
|
|
Solvent
|
The dissolving agent of a solution. Water is the most common ___.
|
|
Solute
|
A substance that is dissolved in a solution.
|
|
Aqueous Solution
|
A solution in which water is the solvent.
|
|
Hydration Shell
|
The sphere of water molecules around a dissolved ion.
|
|
Hydrophillic
|
Having an affinity for water.
|
|
Colliod
|
A mixture made up of a liquid and particles (That because of their large size) remain suspended rather than dissolved in that liquid.
|
|
Hydrophobic
|
Having an aversion to water; tending to coalesce and form droplets in water.
|
|
Molecular Mass
|
the sum of the masses of all the atoms in a molecules; sometimes called molecular weight
|
|
Mole (mol)
|
The number of grams of a substance that equals its molecular weight in daltons and contains Avogadro's number of molecules.
|
|
Molarity
|
A common measure of solute concentration, referring to the number of moles of solute per liter of solution
|