Flashcards in Unit 4 – Solutions Deck (43)
what is a solution made up of?
solution = solute + solvent
what is it called when water is the solvent?
an aqueous solution
The maximum out of solute that will dissolve in a known amount of solvent
A solid substance it appears when 2 solutions are mixed or
a decreasing solubility
in the Chemical equation the compound with a low solubility is
what happens when in a chemical equation both compounds have a high solubility?
no precipitate occurs
there are attractions between
two solute particles
two solvent particles
solute particles and solvent particle
what are the three intermolecular forces?
how do you prepare a volumetric flask or Erlenmeyer flask?
Tapwater Then rinse with deionized water
how do you prepare a beaker?
rinse with tap water then deionized water and then dry
how do you prepare a pipette or buret?
rinse with tapwater, deionized water, condition
why do you condition?
The deionized water left in the equipment will dilute the concentration of the solution
define solution and example
A homogeneous mixture (one phase) that is uniform throughout (looks like a pure substance)
example air oxygen nitrogen brass copper and zinc
A pure substance that is composed of one kind of atom listed on the periodic table example H
two or more elements chemically combined in fixed proportions example H2O
A mixture is made up of two or more different kinds of particles
solution and example
A homogeneous mixture (only one phase) that is uniform throughout (looks like a pure substance) example air 02, N2 and brass (copper zinc)
A heterogeneous mixture (has two or more phases)
example oil and water
a visibly distinct region
what are the three types of percentage concentration?
what is the formula for percent volume volume
mL of solute over 100 mL of solution
what is the percentage concentration formula of weight weight?
grams of solute over 100 g of solution
what is the equation for parts per million?
units of solute over 1,000,000 units of solution
can form a solution with the concentration of greater than or equal to 0.1 moles per litre
The solute cannot form a solution with the concentration of 0.1 moles per litre
what makes a solute dissolve or not dissolve?
The attractions between two solute particles
to solvent particles
solute particle solvent particle
The stronger the attraction the lower the solubility
what happens during Dipole Dipole?
there is an attractive force between oppositely charged ends of polar molecules
what happens during London forces?
it is in all molecules
one electron suddenly moves to one side of the Atom