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;
24 Cards in this Set
- Front
- Back
cohesion
|
the binding together of like molecules, often by hydrogen bonds
|
|
adhesion
|
the clinging of one substance to another
|
|
surface tension
|
a measure of how difficult it is to strech or break the surface of a liquid
|
|
kinetic energy
|
the energy of motion
|
|
heat
|
the measure of the total quatity of kinetic energy due to molecular motion in a body of matter
|
|
temperature
|
measures the intensity of heat due to the average kinetic energy of the molecules
|
|
calorie
|
a unit of heat; the amount of heat it takes to raise the temperature of 1 g of water by 1 degree C
|
|
specific heat
|
the amount of heat that must be absorbed or lost for 1 g of water to change its temperature by 1 degree C
|
|
heat of vaporization
|
the quantitiy of heat a liquid must absorb for 1 g of it to be converted from liquid to gas
|
|
solution
|
a liquid that is a completely homogeneous mixture of two or more substances
|
|
solvent
|
the dissolving agent of a solution
|
|
solute
|
the substance that is dissolved
|
|
aqueous solution
|
solution in which water is the solvent
|
|
hydrophilic
|
"water-loving"; having an affinity for water
|
|
hydrophobic
|
"water-fearing"; having an aversion to water; tending to coalese and form droplets of water
|
|
mole
|
equal in number to the molecular weight of a substance, but upscaled from daltons to units of grams
|
|
molecular weight
|
the sum of the weights of all the atoms in a molecule
|
|
hydrogen ion
|
a single proton with a charge of +1
|
|
hydroxide ion
|
OH- ; molecule that loses a proton; charge of -1
|
|
acid
|
substance that increases the H+ concentration of a solution
|
|
base
|
a substance that reduces the hydrogen ion concentration in a solution
|
|
pH scale
|
a measure of hydrogen ion concentation equal to -log[H+] and ranging in value from 0 to 14
|
|
buffers
|
substances that minimize changes in the concentrations of H+ and OH- in a solution
|
|
acid precipitation
|
rain, fog, or snow that is more acidic than pH 5.6
|