Journal Entry:
How is the mole used in Chemistry?

Consider 12 nickels, 2 empty aluminum cans, and a ball full of carbon dioxide gas.

1. Which has the greatest mass?

2. Which has the greatest number of atoms?

3. Which has the greatest number of moles of atoms?

Learning Intentions

• We will learn to calculate the molar mass of compounds
• We will learn to describe the approximate magnitude of a mole of a substance.
• We will learn how to complete simple conversion between mass and moles.

Closing Task:

 You can calculate molar mass of a compound.

Content Standards being covered:

Student understands what the letters and numbers stand for in a compound formula, can use those letter and numbers to determine how many of each type of element there are in a formula.

Student can create mathematical representations of chemical reactions and use them to make calculations about products and reactants.

Students can use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. (HS-PS1-7 and CCC Energy and Matter)