It’s time to connect the concepts of free energy and equilibrium to redox reactions.  We will determine cell spontaneity as well as how cells might operate if we change the concentration of our solutions. Mission 7.03 Learning Objectives Relate E°cell to ΔG° and equilibrium constants. (20.5) Calculate emf under nonstandard […]

Day 83 – Free Energy & Nonstandard Cells

Today, we will put redox to work.  Batteries are an elegant way to use the different abilities of materials to cause electrons to flow.  Those electrons can then be used for practical things, like using your cell phone. Mission 7.02 Learning Objectives Sketch a voltaic cell and identify its cathode, […]

Day 82 – Voltaic Cells & EMF

When we studied chemical reactions, we learned about oxidation and reduction.  Electrochemistry is all about redox reactions so we will begin by reviewing these concepts. For experience, head to Mission 7.01. Learning Objectives Identify oxidation, reduction, oxidizing agent, and reducing agent in a chemical equation. (20.1) Complete and balance redox […]

Day 81 – Redox Review

Over the five days of spring break, we’re coming in to wrap up topic 6 and get familiar with some new tools. Session #1 – Review topic 6 concepts (6.01-6.04) Session #2 – Quiz on topics 6.01-6.03 Session #3 – Quiz on 6.04, 6.05 Discussion Session #4 – 6.05 Wrap […]

Spring Sessions

In this topic, we cover the essential aspects of a successful chemical reaction in terms of reactants colliding.  We will also introduce the Arrhenius equation, which connects the rate constant to the temperature and activation energy for a reaction. To earn experience for the work, go to Mission 6.04. Learning […]

Day 79 – The Arrhenius Equation

We will continue our look at the rate equation today by examining the graphs that are generated by reaction concentration over time.  In addition, we will consider the concept of half-life of a reaction and how that also connects to the rate data and graphs. For experience, master Mission 6.03. […]

Day 78 – Graphing Rate Data

Understand how rates are determined is important, but we need to be able to describe how each reactant contributes to the overall rate of a reaction.  For this, we will determine rate equations, known as rate laws, and the order (exponent) for each reactant. To get experience for this work, […]

Day 77 – Rate Laws

It is time to break down the various aspects of chemical reactions and time.  In this mission, we will focus upon the methods of measuring reaction rates and the factors that can influence the rate of a reaction. To get experience for this work, go to Mission 6.01. Lesson Objectives […]

Day 76 – Kinetics Intro

Our exploration of atomic structure, energy, and bonding theories has come to a close.  Today we will organize the concepts we’ve seen and put in a little bit of extra practice to help us prepare for the coming exam. Learning Objectives Develop a quick reference for the topic 5 exam […]

Day 75 – Topic 5 Review

We’ve already taken a brief look at the forces of attraction between molecules.  Today we will practice some of these key ideas and try to cement it into our brains. For experience on this work, complete Mission 5.11. Learning Objectives Identify the intermolecular attractive interactions (dispersion, dipole–dipole, hydrogen bonding, ion–dipole) […]

Day 74 – Intermolecular Forces