Lab 2 - Aqueous Solutions

Lab 2 powerpoint

Help from Luetgens - "What kind of particles?"

Help from Luetgens for bonding and electronegativity

Quiz on bonding and electronegativity blank and key

Help from Luetgens for ionic compounds  And help with writing formulas for ionic compounds

Interactive simulation salt vs sugar in solution.  This will help you visualize the ions and molecules in solution.  click here

Models of solutions - click here

Water dissolves sugar - series of segments with animations that hep you visualize - help with lab 2.1  And more help with dissolving

Water dissolves salt - series of segments with animations to help you visualize - help with lab 2.2

Sodium dissolves in water analysis of the reaction w.s. and the key  Practice the analysis.

video:   electronegativity and bonding

video metals vs nonmetals

video    covalent bonds and ionic bonds and another one

video reactivity of metals

sodium chloride as solid, liquid, & gas

video sodium chloride as electrolyte  dissociation of salt

video strong electrolytes

video ionic and covalent bonding animation

video ionic compounds dissociation in solution animated video and another one

video ionic compounds forming sodium chloride

website review of forces between particles

animation to show ionic compound dissolving

Lab 2.1  Different liquids are mixed to construct a model of solutions and solubility.  Poalrity of solute and solvent allow us to predict the solubility. Electronegativity is introduced to predict the polarity of a bond.  Simple organic molecules are introduced (alkanes, alkenes, alkynes, alcohols and organic acids).  Arrhenius model of acids and bases is refreshed from IPS.

 

Lab 2.2  Different solids are added to water to construct model of solubility and conductivity.  The conductivity of solds and solutions are tested.  Metallic bonding is introduced to explain the conductivity of metallic solds. Models of the dissociation of ions are constructed to explain the conductivity of ionic compounds in solution.  Ion-dipole attractions are introduced.  Model of enthlapy is applied to explain the energy transfers observed when ionic compound dissolve.  Identification of particles (atoms, ions ormolecules) is applied using ips model of combinations of metalsand/or nonmetals.