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

BIOL 100 Unit 2 Notes

by: kgrunwaldt

BIOL 100 Unit 2 Notes BIOL 100 7012 01

Truman State
GPA 3.92

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 notes cover Unit 2.
Biology with Lab
B Moore
Class Notes
25 ?




Popular in Biology with Lab

Popular in Biology

This 2 page Class Notes was uploaded by kgrunwaldt on Saturday January 23, 2016. The Class Notes belongs to BIOL 100 7012 01 at Truman State University taught by B Moore in Fall 2015. Since its upload, it has received 13 views. For similar materials see Biology with Lab in Biology at Truman State University.


Reviews for BIOL 100 Unit 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
1. Subatomic particles: protons, neutrons, electrons 2. Matter: anything that occupies space and has mass 3. Elements: cannot be broken down into any simpler substance during an  ordinary chemical reaction a. CHNOPS: most abundant elements in living organisms i. Carbon, Hydrogen, Nitrogen, Oxygen,  Phosphorus, Sulfur b. Anything after Uranium (92) is man­made 4. Nucleus: center of an atom composed of protons (positively charged) and  neutrons (neutral) a. Electrons: negatively charged particles orbiting an atom’s  nucleus­­has negligible mass but occupies most of the space of an atom 5. Atomic number: equal to the number of protons (in a neutral atom, is also  equal to the number of electrons) 6. Mass number: number of protons+number of neutrons 7. Isotopes: atoms of the same element but that differ ONLY in the number  of neutrons a. This changes the mass number but NOT the atomic number i. hydrogen­1 (protium) 1p, 1, 0n ii. hydrogen­2 (deuterium) 1p, 1e, 1n iii. hydrogen­3 (tritium) 1p, 1e, 2n 8. Electrons are responsible for bonds between atoms a. First electron shell can hold 2 electrons b. Outermost electron shell can hold 8 electrons 9. Ionic bonds: transfer of electrons a. Relatively strong i. Example: NaCl (sodium chloride) ii. Na=11 Cl=17 iii. Outer shell of Na has 1 electron, outer shell of  Cl has 7 electrons iv. When ionically bonded, electron from Na jumps to Cl and both have full outer rings v. Na is now an ion because it has a positive  charge (11 protons, 10 electrons) vi. Cl is negative because it has 17 protons and  18 electrons 1. Opposites attract 10.Covalent bonds: sharing of electrons a. Strongest bonds b. Known as molecules i. Example: H2 1. Hydrogen has one electron, so  two elements of hydrogen share the two electrons and form  a single bond ii. Example: O2 1. Shares two pairs of electrons,  forming a double bond iii. Example: CH4 1. Carbon: 6 2. Hydrogen: 1 a. Hydrogen x4=4 3. Four pairs of shared electrons,  forming four single bonds iv. Example: H2O 1. Two pairs of shared electrons,  forming two single bonds 2. Bent molecule 11.Electronegativity: tendency of an atom to pull electrons toward itself a. Oxygen: 3.5 b. Nitrogen: 3.0 c. Carbon: 2.5 d. Hydrogen: 2.1 i. The higher the number, the greater the  attraction 12.Polar covalent bond: not sharing electrons equally 13.Nonpolar covalent bond: sharing electrons equally 14.Hydrogen bond: weak, electrostatic contractions that hold water molecules together a. Must have polarity b. Must involve hydrogen


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

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!"

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!"

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!"


"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.