New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Study Guide for Exam 2

by: Karmen Young

Study Guide for Exam 2 CHM 11500 - 004

Marketplace > Purdue University > Chemistry > CHM 11500 - 004 > Study Guide for Exam 2
Karmen Young
GPA 3.23
General Chemistry
Scott Alexander McLuckey

Almost Ready


These notes were just uploaded, and will be ready to view shortly.

Purchase these notes here, or revisit this page.

Either way, we'll remind you when they're ready :)

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Compliles in class notes from lecture and study tips.
General Chemistry
Scott Alexander McLuckey
Study Guide
50 ?




Popular in General Chemistry

Popular in Chemistry

This 4 page Study Guide was uploaded by Karmen Young on Friday October 16, 2015. The Study Guide belongs to CHM 11500 - 004 at Purdue University taught by Scott Alexander McLuckey in Fall 2015. Since its upload, it has received 68 views. For similar materials see General Chemistry in Chemistry at Purdue University.


Reviews for Study Guide for Exam 2


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/16/15
CHM 115 Study Guide for EXAM 2 October 19th 2015 Lecture 8 The Atom and Spectroscopy Atom Force Microscopy atoms can be picked up and relocated Atom a dense nucleus containing p n with e surrounding in an electron cloud Thomason plum pudding model Rutherford s Exp Alpha particles shot at gold foil de ected by nucleus Disproved A Electrons behave as particles and waves Atoms don t collapse due to energy E KE PE Travels in waves with a wavelength lambda and frequency Travel in a vacuum at the speed of light c 30010quot8 ms c frequency wavelength inversely proportional The intensitybrightness is related to its amplitude Electromagnetic Spectrum Gamma ray Xray Ultraviolet VisibleVIB GYOR Infrared Microwave Radio waves IN ORDER OF INCREASING WAVELENGTH AND DECREASING FREQUENCY Refraction is the change in a wave s speed when entering a different medium Diffraction is the bend of a wave around an edge of an object amp A wavelike Blackbody Radiation and the photoelectric effect show the energy properties Light exists as photons whose energy is directly proportional to frequency Quantam Theory an atom has only certain energy quantites and can change its energy only by absorbing or emitting a photon whose energy equals the change in atom s energy Ephoton hv hcwavelength change in Eatom Bohr s Model had many deficiencies orbiting electrons would lose energy and spiral into the nucleus allocation of values of n were used arbitrarily and it would work with only Hydrogen Lambda hmv Schrodinger s Wave Mechanical Model of the H atom electrons are treated as a matter wave and is described mathematically by a wave equation Lecture 9 The Atom and Spectroscopy Each allowed electron energy is described by a wave function with values of particular quantam numbers 6 7p The wave function has a radial and an angular component The greater the electron energy the further out the electron tends to be SEE SLIDES WITH THE ORBITAL SHAPES Order 182 2s2 2p6 3s2 3p6 4s2 3d 4p6 5s2 4d 5p6 6s2 4f 5d 6p6 7s2 5f 6d Orbitals overlap to form bonds which determines the shape of the final product molecule Lecture 10 The Atom and Spectroscopy Spectroscopy white light shines through a prism and the colors in the spectrum separate no absorbance If the solution is insert color it means that the color went through and the others were absorbed Absorbance log IoI ebc where e is the molar absorptivity b is the width and c is the concentration Lecture 11 Trends in Chemical Reactivity Recap of Lecture 9 Know how to build an atom Ex 33 electrons using 1s2 2s2 2p6 3s2 3p6 4s2 3d 4p3 Paramagnetic unpaired electron Diamagnetic all electrons are paired so no magnetic field Electron Shielding core electrons shield valence electrons from nucleus Valence electrons feel effective nuclear charge ZEFF Z shielding The attraction for electrons is specified by the ZEFFradius Electrons drift toward atom with higher ZEFFradius Lecture 12 Trends in Chemical Reactivity Atoms interact with each other through their skins Ionic bonding Between nonmetal and metal ionic solid Covalent bonding Between 2 nonmetals separate molecules Metallic bonding Between metals electron pooling metal ion in electron sea Atomic radius increases as you move down the periodic table and decreases as you go across Electron affinity the loveattractiveness for electrons Lecture 13 Trends in Chemical Reactivity Metals weaker hold over valence electros form cations Nonmetals stronger hold over valence electrons form anions share electrons With metalloidsnonmetals The more valence electrons the stronger the bonding and the higher the melting point Oxide Behaviors Metal oxide amp water forms OH39 basic Nonmetal oxide and water for H30 acidic Some metals and metalloids form amphoteric oxides act as bases or acids in water Hess s LaW the enthalpy change of an overall process is equal to the sum of the enthalpy change of the individual steps Lecture 14 Trends in Chemical Reactivity Endothermic absorbs energy Exothermic releases energy Unit kJmol Electrostatic energy equation GIVEN Covalent bonding sharing of valence electrons both atoms are electron hungry Forming a bond releases energy and Breaking a bond requires energy To Study Lectures 814 Readings 71 72 74 82 131 134 135 83 84 27 28 91 92 93 96 65 62 64 94 Homework Assignments 814 Labs 2 and 3 Recitation Worksheets Learning Objectives Exam 2 Practice Problems Reminders You have a helpful information sheet given to you at the exam Look and see What material you do not need to remember because you are given it Arrive around 730 PM on Monday October 19 2015


Buy Material

Are you sure you want to buy this material for

50 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Kyle Maynard Purdue

"When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the I made $280 on my first study guide!"

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.