Chemistry. States of matter – Session 2 Session Objectives.
The Mole and Stoichiometry H Chemistry I Unit 8. Objectives #1-4 The Mole and its Use in Calculations I.Fundamentals 1 mole of an element or compound.
Chemical formulas and compounds
Chemistry 11 Final Quiz
The Mole Concept Chemistry. What is a mole? The mole is a unit used to measure very small quantities – Such as atoms, particles, molecules, ions, etc.
Stoichiometry Chemistry Dr. May. Moles One mole of anything contains Avogadro’s number of particles: One mole of sodium (Na) contains 6.02 x 10 23 atoms.
1 Quantities of Reactants and Products Chapter 4 Antoine Lavoisier 1743-1794. “Father of modern chemistry.” Recognized true elements. Used quantitative.
Bubble Gum Lab! Step 1 – Measure mass of empty cup. Record. Step 2 – Unwrap a piece of gum for each member of your group and place in the cup. Measure.
EXAM #1 ANSWER KEY POSTED OWL: CHAPTER 4 PART 1 HOMEWORK EXAM GRADES POSTED (LEFT SIDE “COURSE GRADES” LINK) Announcements.
Lecture #7 - (a) The Mole Concept, (b) Formula of an Unknown Chemistry 142 B James B. Callis, Instructor Autumn Quarter, 2004.
Molar Mass. Molecular Mass The molecular mass of a substance is the mass in atomic mass units (amu) of all the atoms in a given molecule. It is more commonly.
Chapter 17(2) Kinetic Theory of Gases. Ideal Gas Law The law is approximately true for real gases at low pressure and density. An ideal gas is a gas that.