Luetgens Chemistry:

Using  Models  to  construct  and   apply  a  conceptual  understanding

Our goal in this course is to develop a conceptual understanding of chemistry.  You will use models to describe and explain observations of the world around you and in the lab.  Models are powerful ways of thinking that will allow you to visualize and explain.  Since you will use these models repeatedly  to analyze reactions all year long, you will develop a deep lasting understanding as well as thinking and communication skills.  You will constuct your understanding so that chemistry makes sense to you.

          OUR MODELS        -        All of these models aredeveloped and used in first semester.  In second semster they are further refined and continue to be applied.  Click here to get the comprehensive hand-out of all the models.

Model of Energy: Kinetic (KE) and Potential (PE) at both the macroscopic and particle level Graphic organizers about energy and matter  - the blank and the key and another one to show energy transfers blank and key. (Introduced in IPS.  Click here to access the IPS page on energy. Download the powerpoint for help and watch Eureka PE and KE videos.  First used again in Chem Lab 1.1)

Particle and Energy Model of Temperature  ( Introduced in IPS. Click here to access the IPS page.  First used again in Lab 1.1 click here to go back to that page)

Energy Transfer as Heat  ( Introduced in IPS. Click here to access the IPS page.  First used again in Chem Lab 1.2.  Click here to go back to that page - see the calorimeter and equation used to calculate)

Electrical Force Model  ( Introduced in IPS. click here for more details)

Particle Model of States of Matter  ( Introduced in IPS. Click here to access the IPS page. First used again in Chem Lab 1.1 click here for the models help page)

Particle Collision Model of Pressure  ( Introduced in Lab 1.3 check here to get to the help page)

Particle Collision Model of Reactions  ( Introduced in Lab 1.4 click here for details

Balanced Equations show conservation of mass (introduced in IPS and practiced in chem lab 4 - click here to get help )

Equilibrium Model for Reversible Reactions  ( Introduced in Lab 1.3 click here for details )

Enthalpy Model Click for overview of enthalpy. graphic organizer blank and key ( Introduced in Lab 1.1 click here for some help and more )

Entropy Model  ( Introduced in Lab 1.1 click here for the link)

Particle Models - different kinds of particles: atoms, ions, or molecules ( Introduced in Lab 2 click here for the link and graphic organizer )

Atomic Model: protons, neutrons and electrons (refined using Bohr and quantum mechanics in second semester) ( Introduced in IPS and first used again in Lab 1.1)

Models of Acids and Bases ( refined using Bronsted-Lowry in second semester) (Introduced in IPS and first used again in Chem Lab 1)

Models of Attractions and Bonding between Particles: metallic, ionic, covalent as well as IMF ( Introduced in IPS and first used again in Lab 2  Click here for help with EN and bonding and here for metallic bonding)

Particle Model of Electrical Current as a flow of charge ( Introduced in IPS and first used again in Lab 2)

Models of solutions - electrolytes (ions in solution) and non-electrolytes (molecules in solution)  (click here)

Electron Transfer Model: oxidation and reduction ( Introduced in Lab 2 )  practice with sodium reacts in water (blank graphic organizer and the key)

Moles and problem solving strategy ( Introduced in Lab 3 )  link to moles help

  A review website with lotsof practice here