BCHEM 142B General Chemistry I

Winter 2013 General Assignment #4 January 27, 2013

Reading Assignments and prep work for class in week 4:

For Tuesday, Jan 29 – complete Ch 3 and start Ch 4

Complete the Exercises 5-6 on p.76 of Hanson 5-1 before class; we will work the Problems on that page in class
Complete Key Questions 1-8 on p. 78 of Hanson 5-2 before class..
Read and study Zumdahl, Chapter 4, sections 1-3.
The key questions prepared for these activities may be checked on the daily quiz at the start of class on Tuesday.

For Thursday, Jan 31 – Exam Day

Read and thoroughly study Chapters 1-3 of Zumdahl for the exam..
Complete all of the exercises and problems in the Hanson activities that we have done thus far: 2-1, 2-2, 2-3, 3-2, 3-3, 3-4, 4-1, and 5-1.
Prepare a 4 x 6 “ card including whatever you will need (student number, unit conversions, nomenclature of difficult-to-name compounds, important constants such as Avogadro’s number, and value of the amu in grams)
Bring your calculator – no cell phones allowed – only ordinary calculators.
Bring pencils or blue/black pens – no red pens on the exam.
The second page of this GA4 lists topics to be covered on the exam that are very likely to be there.

After Classes: Always complete the exercises and problems for the active learning exercise(s) if you did not get them finished in class. It is important to complete these as they will be checked periodically during the term.

Homework : See OWL for details and due dates. The summary of assignments is:

· Required Assignments due Jan 28, 11:00 AM: sections of chapter 3;

· Extra Credit due Jan 31, 8:30 AM: 2-EOC

· Extra Credit due Jan 31, 8:30 AM: 3-EOC

· Required Assignments due Feb 11, 11:00 AM: sections of chapter 4

Topics to review for Exam 1

· Laws of chemistry: Multiple Proportions, Definite Proportions, Conservation of Mass.

· Dalton’s Atomic Theory

· Atomic Symbols: what information do they contain? How can you use them?

· Periodic Table: recognize the positions of the families: Alkali Metals, Alkali Earth Metals, Transition Metals, Halogens, and Rare Gases.

· Average atomic mass: what is it ? How is it calculated from natural abundance of the isotopes?

· Gas volumes at same temp and pressure: how are the volumes related to the number of molecules in the gas sample?

· Mole: what is it? How is it used?

· Formula weight: How is it calculated for an empirical formula?

· Molecular weight (or molar mass): How is it calculated for a molecular formula?

· Given a mass of a compound, how many moles in it? How many atoms in it?

· Given a compound’s formula, what is the mass % of each element?

· Given the mass % of each element in a compound, what is its empirical formula?

· Given the empirical formula and the molecular weight, what is the molecular formula of a compound?

· When is a chemical reaction balanced?

· Given a reaction equation, be able to determine if it is balanced or not?

· Given a set of reactants and products , be able to write a chemical equation for the reaction and balance it.

· Be able to balance a chemical reaction in cases similar to the ones we have worked in the problems.

· Know what the coefficients in a balanced reaction represent.

· Given a balanced reaction, be able to calculate how many moles of a product are produced by complete reaction of X moles of a reactant.

· Given a balanced reaction, be able to calculate how many moles of a product are produced by complete reaction of X grams of a reactant.

· Given a balanced reaction, be able to calculate how many grams of a product are produced by complete reaction of X moles of a reactant.

· Given a balanced reaction, be able to calculate how many grams of a product are produced by complete reaction of X grams of a reactant.

· Be able to determine the limiting reactant for a set of initial reactants

· Be able to use the limiting reactant to determine how much of each reactant is consumed and how much of each product is produced.

· Understand the relationship between actual and theoretical reaction yield.