Shared Flashcard Set

Details

Water, solubility, molarity, and dilution
chemistry
24
Chemistry
10th Grade
04/02/2011

Additional Chemistry Flashcards

 


 

Cards

Term
Name as many properties of water as u can
Definition
*high surface tension
*water is polar
*hydrogen bonding
*water is cohesive and adhesive
*universal solvent
*three states of matter
*water has high boiling point
*ice is less dense than water
*expands when frozen
*high specific heat,
* high heat of vaporization
Term
water is most dense at what temperature?
Definition
4 degrees Celsius
Term
like dissolves _______
Definition
like
Term
water can dissolve __________ substances
Definition
polar
Term
water molecules bond __________
Definition
frequently
Term
surface tension
Definition
measure of force necessary to stretch or break the surface of liquid
Term
when liquid evaporates, the surface ________ (cools/ heats up). What do we call this?
Definition
cools; evaporative cooling
Term
What are the 3 ways to increase solubility?
Definition
agitate, crush, heat up
Term
crushing a substance does what to make it more soluble?
Definition
it increases the surface area of the substance
Term
What does heating do to increase a subtance's solubility
Definition
speeds up molecules which speeds up dissolving which increases amount of subtance that dissolves
Term
solubility
Definition
most of something that can dissolve at a temperature
Term
saturated solution
Definition
has dissolved the most it could of somethin
Term
unsaturated solution
Definition
unfull, can still dissolve more stuff
Term
super-saturated solution
Definition
temporarily holding MORE than it can, a seed crystal will make the excess solute come out
Term
how do we super saturate a solution?
Definition
heat it up, put some more in, cool it down,
you have to cool it down so it could remain dissolved
Term
what three things affect the solubility of a substance?
Definition
volume, pressure, temperature
Term
t/f: pressure affects the solubility of a gas more than solid
Definition
true
Term
t/f: increased temperature makes it harder to dissolve a solid in water
Definition
false, that's a gas
Term
molarity
Definition
concentration, how much moles in 1 liter
Term
how do we find molarity?
Definition
divide moles of a substance by it's volume
Term
what is the unit for molarity
Definition
M or mol/L
Term
how do we dilute
Definition
add more solvent to solution
Term
Why do we dilute a solution?
Definition
to make the solution less concentrated or make it "weaker"
Term
What is the formula used for dilution?
Definition
molarity #1 times volume #1 equals molarity #2 times volume #2
Supporting users have an ad free experience!