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Chapter 3

Earth's Environmental Systems lesson 1-2

TermDefinition
Matter All material in the universe that has mass and occupies space
Atoms The basic units of matter
Element A chemical substance with a given set of properties that cannot be broken down into substances with other properties
Nucleus Containing, particles called protons and neutrons
Molecule A combination of two or more atoms of the same type or of different types joined by covalent bonds
Compound A substance composed of atoms of two or more different elements
Hydrocarbons Organic compounds containing only hydrogen and carbon.
Solution A mixture in which all the ingredients are evenly distributed
Macromolecules Proteins nucleic acids, carbohydrates, and lipids
Proteins Polymers that serve many functions in organisms
Nucleic acids Macromolecules that direct protein production
Carbohydrates Polymers that consist of atoms of carbon, hydrogen, and oxygen
Lipids A chemically diverse group of macromolecules that are classified together because they do not dissolve in water
pH scale The acidity or alkalinity of a solution
Feedback loop An effect, or output, in the same system, a cyclical process
Erosion Removal of soil by water, wind, ice, or gravity
Geosphere Made of all the rocks at and below earth's suface
Lithosphere The hard rock on and just below Earth's surface- the outermost layer of the geosphere
Biosphere Consists of all the planet's living or once-living things and the non-living parts of the environment with which they interact
Atmosphere Consists of the layers of gases surrounding our planet
Hydrosphere Encompasses all water-salt, fresh, liquid, ice, and vapor-on Earth's surface, underground and in the atmosphere
Created by: josh937
 

 



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