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


by: Esraa Hagag

chemistry chem135

Esraa Hagag
Northampton Community College

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

these will cover mostly week 3
chemistry of life
edward s fleming
Class Notes
25 ?




Popular in chemistry of life

Popular in Chemistry

This 2 page Class Notes was uploaded by Esraa Hagag on Thursday September 22, 2016. The Class Notes belongs to chem135 at Northampton Community College taught by edward s fleming in Fall 2016. Since its upload, it has received 3 views. For similar materials see chemistry of life in Chemistry at Northampton Community College.

Similar to chem135 at Northampton Community College


Reviews for chemistry


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: 09/22/16
Heat (thermos­energy) Its form of energy important in chemistry include:  Light  Sounds  Electrical  Mechanical energy: is associated with the moving parts of machines Heat and temperature are related but are not the same thing Heat units: 1. Calorie (scientific): It is the amount of heat (thermal energy) needed to raise one gram of water one degree Celsius. 2. K­calorie (Kcal) Scientific unit of heat is Joule (J) 1 Cal = 4.184 J Dietary calories = 1000 scientific calories English system: British thermal unit (Btu) Chapter 4 Atoms and Elements All matter can be classified as: 1. Element 2. Compound 3. Mixture  Element Pure substance that cannot be chemically broken down into simpler substance or  matter  Atom  It is the smallest particle of element having properties of that particular  element  Atoms are basic building of all matter  Around 112 elements  Around 88 naturals  Chemical symbol: is 1 or 2 letter symbol representing one atom of some  element  e.g.          C­ carbon, N­ nitrogen Compounds Pure substances consisting of 2 or more different elements in affixed proportion  chemical formula: shows the kind and number of atoms in a compound  H2O, C 12O22 11  The molecule is the smallest part of a compound that still has the property of  compound  Chemical formula represents one molecule  At 13 million compounds in existence when elements combine (in chemical R ) xn to form compounds they lose individual identity. E.g. hydrogen, oxygen  Compounds can be chemically broken down into their constant elements Mixtures Blend of two or more pure substances not a compound because:  Components in mixture still have their own properties  In a mixture the ratio of components is highly variable  The mixture properties are a weighted average of components properties


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."

Allison Fischer University of Alabama

"I signed up to be an Elite Notetaker with 2 of my sorority sisters this semester. We just posted our notes weekly and were each making over $600 per month. I 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."


"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.