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chemistry chpt 12
chpt 12 solutions
| Question | Answer |
|---|---|
| mixtures,very unique components of mixture, not chemically combined. No definet proportions because you can put different amounts together, | solutions |
| constant properties throughtout | homogeneous |
| dissolving substance | solute |
| what is being dissolved | solvent |
| alchol dissolves in water,breaking down in alcohol molecule.liquids are not in direct contact with the same particles all the time so there already at fundamental state. | liquid in liquids |
| mercury in silver | liquid in solid |
| penny and nickel melt them and put them together.solution forms between metals when they are in a liquid state is an alloy. | solid in solid |
| do not produce enough light for us to see them | fundamental particles |
| particles susppended in a medium. ex.sand and water,the sand will eventually go to the bottom. | suspensions |
| how can you make the sand suspended longer? | break them up into smaller particles,and if you make them small enough the action of medium you can keep it suspended indefinetly. |
| particles not at fundamental state, but are small enough to remain suspended indefinetly | colliod suspensions |
| larger can see light reflected ex.milk right from cow. | colloids |
| property that can be used to distinguish between a solution and a colloid. | tyndall effect |
| solution that contains ions | electrlytes |
| these solutions have charged particles in their and make electric. | electrolyte |
| solutions contains all of dissolve solute that it can Hold under present conditions. | saturated |
| two ongoing processes occuring at the same time. | dynamic equilibrium systems |
| solution that contains more dissolved solute than a saturated contains under the same conditions. | supersaturated |
| substance is the amount of that substance required to form a saturated solution with a specific amount of solvent at a specific temperature | solubility |
| the solution process with water as the solvent | hydration |
| liquids that are not soluble in eachother | immiscible |
| solubility of a gas in a liquid is directly proportional to the partial pressure of that gas on the surface of the liquid. | henry's law |
| liquids that dissolve freely ion one another in any portion | miscible |
| the rapid escape of a gas from a liquid in which it id dissolved | effervescence |
| a solute particle that is surrounded by solvent molecules. | solvated |
| the net amount of energy absorbed as heat by the solution when a specific amount of solute dissolves in solvent, | enthalpy of solution |
| if negative value | exothermic |
| if positive value,if temperature is higher it will occur more frequently then lower temperature. | endothermic |
| step one | salt crystals (solute particles) have to seperate eachother it requires energy therfore is endothermic solution. |
| step two | water must make room for salt particles (solvent particles must seperate) needs energy to do this so is engothermic |
| step three | attachment of solute and solvent particles,come together causing energy to be released (so is exothermic) |
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