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Chapter 3 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 A central core, 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 atom of two or more different elements.
Hydrocarbon Organic compounds containing only hydrogen and carbon.
Solution A mixture in which all the ingredients are evenly distributed.
Macro molecules Proteins,nucleic acids,carbohydrates, and lipids.
Proteins Polymers that serve many functions in organisms.
Nucleic acids Macro molecules that direct protein production.
Carbohydrates Polymers that consist of atoms of carbon, hydrogen, and oxygen.
Lipids A chemically diverse group of macro molecules that are classified together because they do not dissolve in water.
pH The acidity of alkalinity of a solution.
Feedback loop Sometimes an event is both a cause, or input, and an effect, or output,in the system.
Erosion The removal of soil by water, wind, ice, or gravity, can lead to positive feedback loop.
Geo sphere Is made of all the rock at and below Earth's surface.
Lithosphere The hard rock on and just below Earth's surface the outermost layer of the geosphere.
Biosphere Consist of all the planet's living or once-living things and the nonliving parts of the environment with which they interact.
Atmosphere Consist of the layers of gases surrounding our planet.
Hydrosphere Encompasses all water salt, fresh, liquid, ice, and vapor on Earth's surface, under ground, and in the atmosphere.
Created by: Kamyrah
 

 



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