Class Notes (838,710)
United States (325,519)
Life Science (261)
LIFE 102 (201)
Lecture

Subatomic particles, atomic number, atomic mass, isotopes, covalent bonds, molecules, ionic bond

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Department
Life Science
Course
LIFE 102
Professor
Louis Bjostad
Semester
Spring

Description
21 JanuaryEssential Elements of LifeAbout 25 of the 92 elements are essential to lifeCarbon hydrogen oxygen and nitrogen make up 96 of living matterMost of the remaining 4 consists of calcium phosphorus potassium and sulfurTrace elements are those required by an organism in minute quantitiesSubatomic particlesAtoms are composed of subatomic particlesRelevant subatomic particles includeNeutrons no electrical chargeProtons positive chargeElectrons negative chargeNeutrons and protons form the atomic nucleusElectrons form a cloud around the nucleusNeutron mass and proton mass are
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