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

September 30th Class Notes

by: Nadia Shibly

September 30th Class Notes Chemistry 112

Marketplace > University of Oregon > Chemistry > Chemistry 112 > September 30th Class Notes
Nadia Shibly
GPA 3.74

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

Principles of Chemistry I
Sophiya V. Garashchuk
Class Notes
25 ?




Popular in Principles of Chemistry I

Popular in Chemistry

This 3 page Class Notes was uploaded by Nadia Shibly on Thursday October 1, 2015. The Class Notes belongs to Chemistry 112 at University of Oregon taught by Sophiya V. Garashchuk in Summer 2015. Since its upload, it has received 113 views. For similar materials see Principles of Chemistry I in Chemistry at University of Oregon.

Similar to Chemistry 112 at UO


Reviews for September 30th Class 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: 10/01/15
September 30th 2015 Class Notes  Elements *The elements are the different types of building blocks.  *All the atoms of an element have the same atomic number.  *The atomic number is the # of protons. (same number of protons as electrons) safer to use  protons *The periodic table computes all the elements giving each element it’s own unique symbol. ex) Hydrogen= H       Carbon = C        Calcium= Ca       Chlorine= Cl        Sodium= Na (Natrium)­ latin       Gold= Aurum­ latin (Au) The periodic table lists the elements in increasing order of the atomic #.  Clicker Question #1: How many protons does an atom of the element Sulfur (S) have in it’s  Nucleus?  A. 6      B) 8      C) 16     D)  32 The Nucleus: Bookkeeping ● The atomic number (Z) is the # of protons in the nucleus which defines the  element.  ● The number of protons equals the # of electrons in a neutral atom. ● Except for in the hydrogen atom, there are at least as many neutrons as protons.  ● The mass # (A) is the # of protons and the # of neutrons  The mass # is NOT the mass of the atom, it is a #.  Remember the electrons are much lighter than the nucleus so the protons and neutrons nominate  the mass of the electron.  A Z   X    x= chemical symbol for an element  Isotopes *An isotope of a given element has a different number of neutrons.  ex) A=12, Z=6, 12                   C   Carbon­12 Most Common Isotype  Clicker Question #2 How many neutrons are there in the nucleus of 17      O  A. 8 B. 17 C. 9 D. 25 E. 0 Note on Isotypes:  ­ We won’t worry about which isotype we mention but worry more about the  element itself. ­ The chemical reactivity of isotypes of a given element is mostly the same. ­ The nuclei of some isotopes of certain elements are not stable and decay into  other elements. Not covered in this course. Physical Quantities and Significant Figures Physical Quantity ­ something we can measure  an example of a physical quantity= distance  ● 3 scales of temperatures used in this class  (Fahrenheit (degrees F) 32 degrees F = freezing point of water, 212 = boiling point Celsius  (degrees C) 0 degrees C= freezing point 100 degrees C = boiling point of water  Kelvin (K) 273.15 = freezing point of water 373.15 = boiling point of water  Temperature → Thermal heat so as the temperature decreases the atoms slow down and at absolute zero the atom stops moving. Clicker Question #3  Which is larger?  A. 1 degree C B. 1 Degree F  C. They are the same  Convert Temperature:  Temp= 9F/5C  Temp (celcius) +32        (There are 9 degrees fahrenheit for every 5 degrees celsius    and add 32 since 0 degrees celcius equals 32 degrees fahrenheit. ) Temperature in Kelvin= Temperature in degrees Celcius + 273.15  Mass Mass is a measure of the amount of matter in an object.  Weight is a measure of the force of gravity on an object is proportional to its mass. Units of Mass SI Base unit = Kilograms (kg)  Other Units: lbs, grams, atomic mass Density= mass/ volume  or m                                            __                                             v Density is usually measured in grams Things float in water if it is less dense than water.  water =0.998 grams/ml ex) Diet Coke ­ 0.810lb (368g) 380.2cm^3, 23.20 in^3 density= mass/volume 368/380.2ml = 0.9679 gram/ml Diet Coke will float because it is less dense than water.     


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.