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chemistry vocabulary list 1


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heat involved in the solution process
heat of solution
whose law says that pressure and gas solubility are directly proportional
Henry's Law
the universal solvent
gases have a __________(positive,negative)heat os solution
because water has a high__________, it holds its temperature real well
answer on test chapter 13& 14 was incorrect unsure of answer
the rapid escape of a gas from the liquid in which it was dissolved
the breaking up of a substance into its ions
dissociation???????check answer on test
if you increase the pressure on a liquid, you(increase, decrease the boiling point)
whose law says that vapor pressure depends on the amount of solute it has
Ruoult's Law
Water that is associated with a solid in its crystal formation
water of hydration
Loss of water from a crystal when it is exposed to air
Describe a crystal that has lost its water
Continuous random movement of colloidal particles
Brownian Motion
Hygroscopic substance used a drying agent in packaged medicine, electronics, shoes
An example of a hygroscopic substance used as a drying agent in packaged medicine, electronis, shoes
Answer incorrect/ need correct answer
Dissolving medium
Substance being dissolved
Two liquids that are mutaually soluble are said to be
Homogeneous mixture
Substance whose water solution conducts electricity
Capable of being dissolved
amount of heat absorbed or given off when a solute dissolves in a specific amount of solvent
heat of solution
Mixtures of metals
Heterogeneous mixture such as sand and water
incorrect answer/ need correct answer
A mixture such as jello that has intermediate size particles
The amount of solute dissolved that is dissolved at solution equilibrium in a specific amount of solvent at a specific temperature
The change of a liquid to a vapor when the atmospheric pressure equals the vapor pressure
incorrect answer need correct answer
Amount of heat needed to melt one mole of a solid at its melting point
molar heat of fusion
Changing of a vapor into a liquid
The attractive forces in a liquid are
a) stong encough to prevent the particles form changeing postisions, b)too weak to hold the particles in fixed positions, c)more effetive that those in a solid, d) too weak to livit the movements of the particle
b) too weak to hold the particles in fixed postions.
Compared to the particles in a gas, the particles in a liquid, a) have more energy, b)are larger, c) move around less, d)are widely separated
c) move around less
Liquids have al the following properties except, a)definite volume, b) fluidity, c)ability to diffuse, d) easy compressibility
d) easy compressibility
increasing the pressure on a liquid results in, a) definite volume, b)a large increase in volume, c) larges decrease in volume, d) a change to the gaseous state
a) little decrease in volume
The energy of the particles in a solid is, a) higher that the energy of particles in a gas, b) high enough to allow the particles to interchange with other particles, c) higher that the energy of particles in a liquid, d) lower than the energy of the par
d) Lower than the energy of the particles in liquids and gases
The difference between crystalline and amorphous solids is dtermined by, a)temperature, b)pressure when substances are formed, c) amount of order in particle arrangement, d) strength of molecular forces.
c) amount of order in particle arrangement
A volatile liquid is one which, a) blows up, b) has strong attractive forces between particles, c) evaporates readily, d) has an odor
c) evaporates readily
A phase diagram indicates the conditions under which, a) the various states of a substance exist, b) amorphous solids becone crystalline, c) all vapors become flammable, d) LeChatelier's Principle does not apply
a) the various states of a substance exist
The equilibrium vapor pressure of a liquid is, a)the same for all liquids, b) the pressure exerted by a vapor in equilibrium with its liquid at a given temp, c) constant for a particular liquid at all temps, d)measured at O.C. t
b) the pressure exerted by a vapor in equilibrium with its liquid at a given temp.
Unlike most liquids, when water freezes it, a) yields oxygen, b) decreases in volume, c)increases in volume, d)yields hydrogen
c) increases in volume
Force that pulls adjacent parts of a liquid's surface together that results from attractive forces.
surface tension
An example of an amorphous solid
incorrect answer, nedd correct answer
General name for energy involved in phase changes
incorrect answer
Changing of a gas into a liquid
Pressure exerted by vapor molecules above a liquid
incorrect answer
What occurs when the vapor pressure exuals the atmospheric pressure
incorrect answer
Condition graphed in a phase diagram against pressure
incorrect answer
changing of a solid into a gas without liquefying first
incorrect answer
A solution that contains the maximum amount of solute for a given amount of solvent
saturated solution
A solution that contains more than the normal amount of solute at a given temp
super saturated solution
Colloidal dispersion of a liquid in a liquid
Given an example of a colloidal dispersion of a liquid in a liquid
Scattering of light because of particles in solution
tyndall effect
A solution that contains less than the normal amount of solute
unsaturated solution
Two factors that affect solubility of gases
pressure and temperature
What is the BP+FP of a solution made from 15.0g of bromine dissolved in 125g of benzene (C6H6)
Show work need correct answer
What is the osmotic pressure of a solution of 176g of C12H22O11 in 500ml of water at 27 degrees Celcius?
show your work -----need correct answer
Calculate the amount of heat needed to vaporize 95.0g of Ethanol(C3H5OH)
Show your work------need correct answer
The vapor pressure of CCl4 if 85.6mm 45.0g of a solute (c10H8) is dissolved in 225g of CCl4. What is the vapor pressure of the solution?
Show your work--------VP=69.3
Find the molecular weight of a solute that increases the boling point of water to 110 degrees Celcius. The solution has 195g of the solute in 300g pf water.
show your work ------ need correct answer.
What is the molarity of a solution made by dissolving 145.0g of Ba(NO3)2 in 500ml of water?
show your work ------I thing the answer if M=1 ------please check
What is the solubility of gas X in a liter of water when the pressure in 160mm and Henry's constant is 6.50x10(-5)g/L mm?
Show your work......C=.0104g/L
How much energy is needed to melt 155.5g of ice? Heat of fusion=1.43kcal/mol
show your work-------need correct answer
How many grams of NaOh are need to make 350ml of a 1.5M solution?
Show your work------21=g

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