Review the use of units to describe amounts of large items. Discuss the need for a unit to describe and count small objects, like atoms and molecules. Introduce the concept of the mole. Define how it is based on carbon 12. List the mole as 6.02 x 10e23 particles. View a video on the determination of a mole and how large the number actually is. Run problems which solve for the number of particles, atoms, and/or molecules of specific chemicals. Show how to best set up a ratio which can be used to calculate the number of particles.

Present the method for determining the molecular mass of a compound and then the gram formula mass. Introduce some units used in conveying amounts, such as dozen, ton, and gross.
Discuss why a measurement is needed to convey the number of atoms or molecules in a compound, due to their size. Introduce the concept of the mol. and that it is based on the number of atoms present in 12 grams of carbon.

Discuss using examples how the atomic masses listed for each element are determined. Explain why the masses (weights) are not whole numbers. Define, analyze, and work out the method used to determine the mass of a molecule and/or formula unit. Practice 3-4 problems.

activity sheet used in class as a quiz. The sheet consists of a variety of different types of reactions which are then identified as one of the 4 major reaction types.

Prepare lab equipment and chemicals to perform lab demonstrating double replacement reactions. Hands on lab involving the formation of precipitates indicating a double replacement lab has occurred. 3-4 different reactions are demonstrated, each producing a solid from solution. Using a chart of solubilities of salts, the precipitate is identified in each case and the complete chemical reaction written

Outline the general formula for a double replacement reaction, using letters. Review ionic compounds and the formation of ions when dissolved in an aqueous solution. Show 3 examples of double replacement reactions involving the formation of a precipitate, a gas, or a neutralization. Prepare for a lab exercise on Wed. to demonstrate each type

Outline a double replacement reaction, one in which two metal ions in a compound switch places with each other. Discuss the 3 major double replacement reaction indicators. Outline examples for each by writing balanced equations. Prepare to demonstrate them in the lab.

Double replacement reactions. Read and discuss how to determine the products from the given reactant. Also discuss the chemistry of products found in Ben's Celsius drink.

Set up and perform lab procedures demonstrating single replacement reactions. Discuss results and write the correct formulas for the reactions.

Review the reactions demonstrated in Mon. lab. Introduce the concept of a single replacement reaction using examples. View the electrolysis of water using a Hoffman apparatus and write the balanced equation. Introduce the general equation for this type of reaction