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

Chem 1314 week 2 notes

by: Morgan Walker

Chem 1314 week 2 notes Chem 1314

Marketplace > Oklahoma State University > Chemistry > Chem 1314 > Chem 1314 week 2 notes
Morgan Walker
OK State
GPA 3.2

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

Week 2 chapter 2
General Chemistry
Dr. Jimmie Weaver
Class Notes
25 ?




Popular in General Chemistry

Popular in Chemistry

This 3 page Class Notes was uploaded by Morgan Walker on Saturday January 23, 2016. The Class Notes belongs to Chem 1314 at Oklahoma State University taught by Dr. Jimmie Weaver in Winter 2016. Since its upload, it has received 67 views. For similar materials see General Chemistry in Chemistry at Oklahoma State University.


Reviews for Chem 1314 week 2 notes


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: 01/23/16
Chapter 2 Atoms and Elements Law of Conservation of Mass- mass is neither created or destroyed, just reconfigured Law of Definite Proportion- a pure compound always has the exact same proportions of elements by mass  Water will always have 11.2% H and 88.8% O by mass o 2 hydrogen and 1 oxygen Law of Multiple Proportions- elements may combine in more than one ratio but will no longer be the same compound  2 N + O -> N2O dinotrogen monoxide (laughing gas)  N + 2O -> NO 2 nitrogen dioxide (photochemical smog) Dalton’s Atomic Theory 1. Elements are composed of atoms 2. All atoms of an element are the same but the atoms in a different element are different a. Hydrogen atoms are different from gold atoms 3. Compounds are made of atoms from more than one element 4. Chemical reaction only separates, combines or rearranges atoms. Does not destroy or create them J.J Thompson’s Experiment (pg 51 in book) Thompson performed experiments to probe the properties of a cathode ray. He applied a high electrical voltage in-between two electrodes at either end of the tube. He found that the cathode rays, beams of particles, moved from negatively charged electrode (cathode) to positive (anode). He found that the particles in the ray have certain properties: 1. Travel in a straight line 2. Independent from the composition of the material from which they come from 3. Carry a negative electrical charge He then measured the charge-to-mass ratio of the ray particles by using a magnetic field to deflect them. 8  The value was -1.76 X 10 coulombs.  Lightest know atom. He discovered that the electron was a negatively charged and low mass particle that is present in all atoms. Millikan’s Oil Drop Experiment (pg 52 in book) He sprayed oil into fine droplets using the atomizer and the atoms fell due to the influence of gravity through a small hole into the lower portion where he viewed them with a light source and a microscope. While the droplets fell they gained electrons from ionizing radiation in the air of the chamber which gave the droplets a negative charge and Millikan was able to create an electric field between a positively charged plate (top) and a negatively charged plate (bottom). He then measured the strength of the electric field required to stop the particles then using their radii and density he found their masses he found the charge of the particles. -19  The charge was -1.60 X 10 C Structure of the Atom J.J Thompson’s Plum Pudding atomic model  Suggested that the negatively charged electrons were held inside a positively charged sphere  Would look like a blueberry muffin o Blueberries were electrons, muffin was the positively charged space Rutherford’s Gold Foil experiment  Proved Thompson’s experiment wrong Shot alpha particles through a gold sheet and if the sheet really was like a blueberry muffin then the particles would go straight through.  some did, some deflected and few bounced back Concluded that matter isn’t as uniform as it seems. Must have large regions of empty space with small regions of very dense matter. Nuclear Theory 1. Most of the mass of the atom and all of its positive charge are located in the small core called the nucleus 2. Most of the atom’s volume is empty space with small negatively charged electrons dispersed throughout 3. The amount of electrons outside the nucleus are equal to the amount of positively charged protons inside the nucleus, atom is electrically neutral. Atomic number, mass number and isotopes Atomic number- number of protons inside the nucleus Mass number- number of protons plus number of neutrons Isotopes- atoms that have the same number of protons and a different number of neutrons Atomic mass unit- exactly one-twelfth the mass of 1 carbon 12 atom Mole One mole will always have the same number of atoms no matter what it weighs  6.022 X 103(Avogadro’s number) Atomic or molecular mass unit g/mol Weighted average ∑ ((fraction of isotope) X mass of isotope)


Buy Material

Are you sure you want to buy this material for

25 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."

Amaris Trozzo George Washington University

"I made $350 in just two days after posting my first study guide."

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

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.