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Sulfur

Ch. 2: The Chemical Context of Life

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Biology
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Chemistry
Matter
Chemical elements
Dietary minerals
Nonmetals
Reducing agents
Chalcogens
Sulfur
Chemical substance
Phosphorus
Oxygen
Potassium
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Chapter 2 The Chemical Context of Life Camobell Bio 9th Edition

2.1 An element is a substance that cannot be broken down to other substances by chemical reactions. A compound is a substance consisting of two or more different elements combined in a fixed ratio. Essential elements are needed for a healthy life and to reproduce. Humans need 25, plants need 17 Oxygen (O), Carbon (C), Hydrogen (H) and Nitrogen (N)?make up 96% of living matter Calcium (Ca), Phosphorus (P), potassium (K), sulfur (S), and a few other elements accounting for most of the remaining 4% of an organism's mass. Trace elements are required by an organism in only minute quantities. ? 2.2 Protons and neutrons are electrically charged. Proton= positive, electron=negative, neutron=neutral

Flash Cards

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Biology
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Chemistry
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Chemical elements
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Phosphorus
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Fluorine
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Composition of the human body
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Anatomy and Physiology

Anatomy and Physiology The science of body structures and the relationships among them. The science of body functions. Levels of structural organization Chemical Cell Tissues Organ System Organism Chemical includes atoms- create molecules of(two or more atoms joined together. ESSENTIAL ATOMS TO THE BODY Carbon Hydrogen Oxygen Nitrogen Phosphorus Calcium Sulfur
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APHuG glossary

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Human Geography
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Oxidizing agents
Sulfur
Oxygen
Acid rain
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glossary
Rubenstein

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Acid deposition Sulfur oxides and nitrogen oxides, emitted by burning fossil fuels., enter the atmosphere ? where they combine with oxygen and water form sulfuric acid and nitric acid ? and return to Earth?s surface Acid precipitation Conversion of sulfur oxides and nitrogen oxides to acids that return to Earth as rain, snow, or fog Agribusiness Commercial agriculture characterized by the integration of different steps in the food-processing industry, usually through ownership by larger corporations Agricultural density
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