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Biology Chapter 2 Notes

by: Brianna White

Biology Chapter 2 Notes Biol 111

Marketplace > Lincoln Memorial University > Science > Biol 111 > Biology Chapter 2 Notes
Brianna White

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About this Document

These notes are over material that will be on our next exam
Gen Biology I
Dr. Jarstfer
Class Notes
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Popular in Gen Biology I

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This 1 page Class Notes was uploaded by Brianna White on Monday September 19, 2016. The Class Notes belongs to Biol 111 at Lincoln Memorial University taught by Dr. Jarstfer in Fall 2016. Since its upload, it has received 4 views. For similar materials see Gen Biology I in Science at Lincoln Memorial University.


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Date Created: 09/19/16
Biology Chapter 2 Notes Defenitons  Matter- Anything that takes up space  Element- A substance that can not be broken down to other substances.  Compound- Substance consisting of two or more elements combined in a fixed ratio  Essential Elements- Elements that an organism needs to live a healthy life  Proton- electrically charged  Electron- Negativley Charged  Nuetron- No charge  Isotope- Different atomic forms of the same elem  Radioactive Isotope- One which the nucleus decays suddenly, giving off energy.  Half Life- the time it takes for 50% of the parent isotope to decay  Radiometric dating- the ratio of different isotopes and calculate how many half lives have passed since it has been fossilized.  Valence Electrons- Electrons in the outer most shell  Orbital- Space where electron is found  Covalent Bond- Sharing of a pair of valence electrons, by two atoms  Molecule- Two or more atoms held together by covalent bonds 


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