chemistry vocabulary list 1
Terms
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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
- H2O
- gases have a __________(positive,negative)heat os solution
- negative
- 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
- effervescence
- 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)
- increase
- 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
- Efflorescence
- Describe a crystal that has lost its water
- anhydrous
- Continuous random movement of colloidal particles
- Brownian Motion
- Hygroscopic substance used a drying agent in packaged medicine, electronics, shoes
- dexiccant
- An example of a hygroscopic substance used as a drying agent in packaged medicine, electronis, shoes
- Answer incorrect/ need correct answer
- Dissolving medium
- solvent
- Substance being dissolved
- solute
- Two liquids that are mutaually soluble are said to be
- miscible
- Homogeneous mixture
- solution
- Substance whose water solution conducts electricity
- electrolyte
- Capable of being dissolved
- soluble
- amount of heat absorbed or given off when a solute dissolves in a specific amount of solvent
- heat of solution
- Mixtures of metals
- alloy
- Heterogeneous mixture such as sand and water
- incorrect answer/ need correct answer
- A mixture such as jello that has intermediate size particles
- colloid
- The amount of solute dissolved that is dissolved at solution equilibrium in a specific amount of solvent at a specific temperature
- solubility
- 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
- condensation
-
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
- condensation
- 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
- emulsion
- Given an example of a colloidal dispersion of a liquid in a liquid
- mayonnaise
- 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)
^Hvap+7.61kj/mol - 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