Slide 1We measure ordinary objects either by counting or weighing them, depending on which method is more convenient Silberberg, M. 2010. Principles of General Chemistry.…

Slide 1STP Gas Calculations One-step problems: A balloon is filled with 3.78 L of He gas at STP. How many moles of helium atoms are inside? He Solution: 3.78 L He 22.4 L…

Slide 1A Chemist’s Dozen Today you will only need to copy slides that have a TEAL background Slide 2 Common Measures We frequently refer to measures casually… Couple…

Slide 1 Slide 2 We frequently refer to measures casually… Couple Few Dozen Baker’s Dozen Ream LORD 2 3 12 13 500 4 Slide 3  We can’t work with individual atoms or…

Slide 1 The Mole Concept Slide 2 What is a mole? IIn chemistry, a mole is a counting unit. Abbreviated mol. 11 mol = 6.022x10 23 representative particles. Avogadro’s…

Chapter 18 Fossil Fuels and the Environment Fossil Fuels Forms of stored solar energy created from incomplete biological decomposition of dead organic matter Buried (swamp-like…

The Mole Unit 5 Formula Mass Formula mass - (also called gram formula mass, molecular mass, formula weight, gram formula weight, molecular weight, gram molecular weight,…

Chemical Formula Problems Quantitative Composition of Compounds Chapter 7 1 Avogadro’s Number How do we count atoms? Dozens? Reams? 1.0079 amu = 1 atom hydrogen 40.078…

How systems depend on CARBON and CHEMICAL ENERGY Lesson 5 Activity 1 Explaining what happens when methane burns. Three Questions Poster Question Rules to Follow Evidence…

Introduction to the Periodic Table C: 4 January 2012 Grab a calculator and find your new seat. Objective: You will be able to: convert between number of atoms/molecules,…